{"title":"Test sets","description":null,"products":[{"product_id":"colombo-gh-test","title":"GH Test - Colombo","description":"\u003ch3 data-start=\"93\" data-end=\"132\"\u003eProduct Content – GH Test – Colombo\u003c\/h3\u003e\n\u003cp data-start=\"134\" data-end=\"575\"\u003eThe \u003cstrong data-start=\"137\" data-end=\"160\"\u003eGH Test by Colombo\u003c\/strong\u003e is a reliable and accurate testing kit specially developed to measure the general hardness (GH) of pond and aquarium water. General hardness indicates the concentration of calcium and magnesium ions in the water, which is crucial for the well-being of fish, plants, and other aquatic organisms. A correct GH level contributes to a stable and healthy ecosystem in your pond or aquarium.\u003c\/p\u003e\n\u003cp data-start=\"577\" data-end=\"952\"\u003eThe product is suitable for both freshwater and ornamental ponds and can be used by both hobbyists and professional pond and aquarium managers. Using the GH Test helps monitor water quality, identify abnormalities, and prevent health problems in fish and other aquatic animals that are sensitive to water hardness.\u003c\/p\u003e\n\u003cp data-start=\"954\" data-end=\"1363\"\u003eThe test is easy to use and quickly provides reliable results. By regularly checking the GH level of your pond or aquarium, you can take early action and, if necessary, treat the water to maintain optimal conditions. This is essential for promoting the growth of aquatic plants, preventing stress in fish, and maintaining a healthy and stable aquatic environment.\u003c\/p\u003e\n\u003cp data-start=\"1365\" data-end=\"1395\"\u003e\u003cstrong data-start=\"1365\" data-end=\"1393\"\u003eKey features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1396\" data-end=\"1882\"\u003e\n\n\u003cli data-start=\"1396\" data-end=\"1460\"\u003e\n\n\u003cp data-start=\"1398\" data-end=\"1460\"\u003eMeasures the general hardness (GH) of pond and aquarium water.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1461\" data-end=\"1522\"\u003e\n\n\u003cp data-start=\"1463\" data-end=\"1522\"\u003eReliable and accurate for freshwater and ornamental ponds.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1523\" data-end=\"1599\"\u003e\n\n\u003cp data-start=\"1525\" data-end=\"1599\"\u003eHelps maintain a healthy ecosystem for fish and plants.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1600\" data-end=\"1662\"\u003e\n\n\u003cp data-start=\"1602\" data-end=\"1662\"\u003eEasy to use with quick and reliable results.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1663\" data-end=\"1731\"\u003e\n\n\u003cp data-start=\"1665\" data-end=\"1731\"\u003eSuitable for both private and professional applications.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1732\" data-end=\"1815\"\u003e\n\n\u003cp data-start=\"1734\" data-end=\"1815\"\u003eSupports water management by detecting abnormalities in hardness early.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1816\" data-end=\"1882\"\u003e\n\n\u003cp data-start=\"1818\" data-end=\"1882\"\u003ePromotes optimal plant growth and fish health.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"1884\" data-end=\"2320\"\u003eIn short, the \u003cstrong data-start=\"1895\" data-end=\"1916\"\u003eGH Test – Colombo\u003c\/strong\u003e is an essential tool for anyone striving for an optimal pond or aquarium environment. It provides accurate and reliable information about water hardness, allowing you to take targeted action to maintain a healthy and stable ecosystem. Regular use of this test helps prevent problems and contributes to a beautiful, well-maintained pond or aquarium environment.\u003c\/p\u003e","brand":"Colombo","offers":[{"title":"Default","offer_id":57524616954236,"sku":"5020296","price":9.45,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/colombo-gh-test.jpg?v=1790842987"},{"product_id":"colombo-kh-test","title":"KH Test - Colombo","description":"\u003cp\u003eThe \u003cstrong\u003eColombo KH Test\u003c\/strong\u003e is an accurate and user-friendly test kit for measuring the carbonate hardness (KH) in pond water. The KH value is one of the most important parameters in the pond, because it determines the buffering capacity of the water. This means that the KH value directly affects the stability of the pH value.\u003c\/p\u003e\n\u003cp\u003eA KH value that is too low can lead to strong pH fluctuations, which causes stress and health problems in fish. Furthermore, beneficial bacteria that break down waste products such as ammonia and nitrite function less effectively at an unstable pH. The result is that the water quality deteriorates, which can lead to cloudy water, algae growth, and an unhealthy pond environment.\u003c\/p\u003e\n\u003cp\u003eWith the \u003cstrong\u003eColombo KH Test\u003c\/strong\u003e, you can easily and reliably check whether the KH value in your pond is at the right level. The test is easy to use: with a water sample and the included reagents, you can read the result within a few minutes. The clear color comparison makes it possible to quickly determine whether the KH value is correct or whether adjustment with a product such as Colombo KH+ is necessary.\u003c\/p\u003e\n\u003cp\u003eBy regularly testing the KH value, you prevent problems and ensure a stable and healthy environment in which fish, plants, and bacteria function optimally. This contributes not only to better water quality, but also to clear water and a balanced pond.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eColombo KH Test\u003c\/strong\u003e is therefore an indispensable tool for both beginner and experienced pond enthusiasts. It helps you keep the water quality under control and gives you the assurance that your pond remains balanced, so that you can fully enjoy healthy fish and a beautiful pond.\u003c\/p\u003e","brand":"Colombo","offers":[{"title":"Default","offer_id":57524644577660,"sku":"5020297","price":9.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/colombo-kh-test.jpg?v=1790843020"},{"product_id":"colombo-nh3-test","title":"NH3 Test - Colombo","description":"\u003cp data-start=\"562\" data-end=\"1084\"\u003eThe \u003cstrong data-start=\"565\" data-end=\"585\"\u003eColombo NH3 Test\u003c\/strong\u003e is an accurate and essential test kit for measuring ammonia in pond water. Ammonia (NH3) is one of the most toxic substances for fish and can cause serious damage to their health even in small concentrations. It is mainly produced by fish waste, decaying organic matter and excess fish food. Especially in ponds with a high fish population or insufficient filtration, ammonia levels can rise quickly and pose a threat to the entire ecosystem.\u003c\/p\u003e\n\u003cp data-start=\"1086\" data-end=\"1479\"\u003eElevated ammonia levels disrupt fish respiration by affecting their gills. This leads to stress, oxygen deficiency and an increased risk of disease. In severe cases, excessively high NH3 levels can even be fatal. Therefore, regularly measuring ammonia is crucial to detect and address problems in time before they seriously affect the pond population.\u003c\/p\u003e\n\u003cp data-start=\"1481\" data-end=\"1848\"\u003eThe Colombo NH3 Test is easy to use and provides reliable results within a few minutes. Using a small amount of pond water and the included reagents, a color reaction is produced that you can compare with the clear color chart. This allows you to quickly determine whether the ammonia level remains within safe limits or whether action is required.\u003c\/p\u003e\n\u003cp data-start=\"1850\" data-end=\"2183\"\u003eBy using the NH3 Test frequently, you keep control of the water quality and can take corrective measures, such as improving filtration, reducing feeding or performing a water change. This keeps the pond environment stable and healthy and provides fish and plants with the best conditions to thrive.\u003c\/p\u003e\n\u003cp data-start=\"2185\" data-end=\"2507\"\u003eThe \u003cstrong data-start=\"2188\" data-end=\"2208\"\u003eColombo NH3 Test\u003c\/strong\u003e is suitable for both beginner and experienced pond enthusiasts and is an essential tool for anyone who takes the well-being of their fish seriously. With this test, you prevent hidden dangers from undermining the water quality and ensure a healthy and balanced pond.\u003c\/p\u003e","brand":"Colombo","offers":[{"title":"Default","offer_id":57524722729340,"sku":"5020291","price":13.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/colombo-nh3-test-1.jpg?v=1790843117"},{"product_id":"colombo-no-2-test","title":"NO2 Test - Colombo","description":"\u003cp data-start=\"542\" data-end=\"957\"\u003eThe \u003cstrong data-start=\"545\" data-end=\"565\"\u003eColombo NO2 Test\u003c\/strong\u003e is an accurate and user-friendly test kit that allows you to easily measure the nitrite level in your pond water. Nitrite (NO2) is a toxic substance that is produced during the breakdown of ammonia by bacteria in the biological filter. Although this substance is an intermediate product in the nitrogen cycle, an elevated nitrite level can be harmful to fish and even lead to death.\u003c\/p\u003e\n\u003cp data-start=\"959\" data-end=\"1380\"\u003eToo high a concentration of nitrite hinders oxygen uptake in the blood of fish, which leads to stress, suffocation and a weakened immune system. This can, in turn, cause infections and diseases. Therefore, it is very important to test the NO2 level regularly, especially in new ponds or after cleaning or replacing filter material, when the biological balance has not yet fully recovered.\u003c\/p\u003e\n\u003cp data-start=\"1382\" data-end=\"1745\"\u003eThe Colombo NO2 Test makes it possible to quickly and reliably check whether nitrite levels remain within safe limits. The test works with a simple color comparison: a water sample is treated with reagents, after which the color is compared with the included chart. This gives you a clear picture of the water quality in just a few minutes.\u003c\/p\u003e\n\u003cp data-start=\"1747\" data-end=\"2052\"\u003eBy using the NO2 Test regularly, you can take corrective measures in time, such as improving filtration, reducing the amount of food, or performing a partial water change. This helps to keep the pond environment stable and prevent problems.\u003c\/p\u003e\n\u003cp data-start=\"2054\" data-end=\"2351\"\u003eThe \u003cstrong data-start=\"2057\" data-end=\"2077\"\u003eColombo NO2 Test\u003c\/strong\u003e is therefore an indispensable tool for any pond enthusiast who wants to protect the well-being of their fish. With this test, you can easily keep the water quality under control and enjoy a healthy, clear pond in which fish and plants thrive optimally.\u003c\/p\u003e","brand":"Colombo","offers":[{"title":"Default","offer_id":57524728725884,"sku":"5020287","price":9.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/colombo-no-2-test-1.jpg?v=1790843128"},{"product_id":"colombo-no3-nitraat-test","title":"NO3 Test - Colombo","description":"\u003cp data-start=\"578\" data-end=\"1002\"\u003eThe \u003cstrong data-start=\"581\" data-end=\"611\"\u003eColombo NO3 (Nitrate) Test\u003c\/strong\u003e is a reliable and accurate test kit that allows you to easily measure the nitrate levels in your pond water. Nitrate is formed as the end product of the biological decomposition of waste products such as food scraps, excrement, and organic material. Although nitrate is less toxic than ammonia or nitrite, a high concentration can lead to poor water quality and excessive algae growth.\u003c\/p\u003e\n\u003cp data-start=\"1004\" data-end=\"1421\"\u003eBy regularly checking the nitrate levels, you can intervene in time and take measures to keep the pond environment healthy. An elevated NO3 level can, for example, indicate an overloaded filter, too much food, or an accumulation of organic waste. Detecting such problems early helps restore the balance in the pond and prevents fish and plants from suffering.\u003c\/p\u003e\n\u003cp data-start=\"1423\" data-end=\"1739\"\u003eThe test kit is easy to use and works with a color comparison system. A small amount of pond water is mixed with the reagent, after which the resulting color is compared with the included chart. This allows you to quickly and accurately read the nitrate level and determine whether measures are needed.\u003c\/p\u003e\n\u003cp data-start=\"1741\" data-end=\"2029\"\u003eThe \u003cstrong data-start=\"1744\" data-end=\"1764\"\u003eColombo NO3 Test\u003c\/strong\u003e is suitable for both beginner and experienced pond enthusiasts. With regular measurements, you will always stay informed about the water quality and can ensure a stable and healthy environment in which fish, plants, and beneficial bacteria function optimally.\u003c\/p\u003e\n\u003cp data-start=\"2031\" data-end=\"2222\"\u003eWith this test kit, you have a practical and effective tool to keep the water quality of your pond under control and prevent problems such as algae growth or fish stress.\u003c\/p\u003e","brand":"Colombo","offers":[{"title":"Default","offer_id":57524735476092,"sku":"5020289","price":14.21,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/colombo-no3-nitraat-test.jpg?v=1790843138"},{"product_id":"colombo-ph-test","title":"pH Test - Colombo","description":"\u003cp data-start=\"553\" data-end=\"947\"\u003eThe \u003cstrong data-start=\"556\" data-end=\"575\"\u003eColombo pH Test\u003c\/strong\u003e is a reliable and user-friendly test kit for measuring the acidity of pond water. The pH level is one of the most important parameters in the pond and has a direct impact on the health of fish, the growth of plants, and the activity of beneficial bacteria. A stable and correct pH is therefore essential for a healthy and balanced pond environment.\u003c\/p\u003e\n\u003cp data-start=\"949\" data-end=\"1287\"\u003eWhen the pH level is too high or too low, this can lead to stress in fish, reduced plant growth, and a disrupted bacterial culture that breaks down waste products in the water. By regularly testing the pH level with this Colombo kit, you get immediate insight into the water quality and can adjust in time when necessary.\u003c\/p\u003e\n\u003cp data-start=\"1289\" data-end=\"1592\"\u003eThe test kit is easy to use: a small amount of pond water is tested using the included reagents, after which the color of the water is compared with a clear color chart. This way, you can quickly and accurately read the pH level and determine whether adjustments are necessary.\u003c\/p\u003e\n\u003cp data-start=\"1594\" data-end=\"1843\"\u003eThe \u003cstrong data-start=\"1597\" data-end=\"1616\"\u003eColombo pH Test\u003c\/strong\u003e is suitable for both beginner and experienced pond enthusiasts. By testing regularly, the water quality remains stable, resulting in a healthy pond in which fish feel comfortable and plants grow optimally.\u003c\/p\u003e\n\u003cp data-start=\"1845\" data-end=\"2075\"\u003eWith this pH test, you always keep control of the water parameters and prevent problems that can disrupt the pond environment. It is an indispensable tool for anyone who wants to maintain a clear, stable, and healthy pond.\u003c\/p\u003e","brand":"Colombo","offers":[{"title":"Default","offer_id":57524740817276,"sku":"5020285","price":9.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/colombo-ph-test-1.jpg?v=1790843149"},{"product_id":"colombo-po4-fosfaat-test","title":"PO4 Phosphate Test - Colombo","description":"\u003cp data-start=\"559\" data-end=\"964\"\u003eThe \u003cstrong data-start=\"562\" data-end=\"590\"\u003eColombo PO4 Phosphate Test\u003c\/strong\u003e is a reliable and accurate test kit specially developed to measure the phosphate levels in pond water. Phosphates are important nutrients for plants, but when levels become too high, they are the main cause of excessive algae growth. This often leads to green and cloudy water and can disrupt the biological balance in the pond.\u003c\/p\u003e\n\u003cp data-start=\"966\" data-end=\"1426\"\u003eWith the Colombo PO4 test, you can quickly and easily determine the phosphate levels and take corrective action if necessary. Regular monitoring of phosphate is essential to prevent algae problems and ensure that your pond remains clear and healthy. The test uses a simple color comparison method, making the results easy to read immediately. This makes the test suitable for both beginner and experienced pond enthusiasts.\u003c\/p\u003e\n\u003cp data-start=\"1428\" data-end=\"1772\"\u003eBy gaining insight into the phosphate levels, you can better respond to the needs of your pond and fish. Levels that are too high can indicate an excess of organic waste, such as leftover food, leaves, or excrement. By intervening early, you prevent the water quality from deteriorating and keep fish and plants from becoming stressed.\u003c\/p\u003e\n\u003cp data-start=\"1774\" data-end=\"2060\"\u003eThe \u003cstrong data-start=\"1777\" data-end=\"1805\"\u003eColombo PO4 Phosphate Test\u003c\/strong\u003e is an indispensable tool for anyone aiming for a healthy, stable, and clear pond. With regular measurements, you keep control of the water quality and can enjoy a pond in which fish, plants, and bacteria thrive optimally.\u003c\/p\u003e","brand":"Colombo","offers":[{"title":"Default","offer_id":57524751008124,"sku":"5020298","price":15.29,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/colombo-po4-fosfaat-test.jpg?v=1790843159"},{"product_id":"colombo-test-lab","title":"Water Test Lab - Colombo","description":"\u003cp data-start=\"567\" data-end=\"1004\"\u003eThe \u003cstrong data-start=\"571\" data-end=\"597\"\u003eColombo Water Test Lab\u003c\/strong\u003e is a complete and reliable solution for accurately analyzing the water quality in your pond. A stable pond environment is of great importance for the health of fish, plants, and the bacterial culture that ensures a natural balance. With this test set, you will get a complete overview of the most important water values in a short time, so you can intervene immediately when necessary.\u003c\/p\u003e\n\u003cp data-start=\"1006\" data-end=\"1484\"\u003eThe set offers the possibility to measure the pH value, KH (carbonate hardness), GH (total hardness), NO2 (nitrite), NO3 (nitrate), and NH3 (ammonia). These are the six essential parameters that determine whether the pond water is healthy and whether the ecosystem is functioning optimally. An abnormal value can lead to problems such as stress in fish, poor plant growth, or even fish mortality. With the Colombo Water Test Lab, these problems can be detected and solved in time.\u003c\/p\u003e\n\u003cp data-start=\"1486\" data-end=\"1921\"\u003eThe test set is user-friendly and comes with a clear manual and a color chart with which you can easily read and interpret the measurement results. This makes the set suitable for both beginner and experienced pond enthusiasts. Regularly testing the water gives insight into the development of the pond environment and makes it possible to act preventively, instead of only when problems arise.\u003c\/p\u003e\n\u003cp data-start=\"1923\" data-end=\"2204\"\u003eThanks to the accuracy and reliability of the \u003cstrong data-start=\"1976\" data-end=\"2002\"\u003eColombo Water Test Lab\u003c\/strong\u003e, you can count on clear and useful results. It enables you to use the right products or measures to improve the water quality and keep your pond in optimal condition.\u003c\/p\u003e\n\u003cp data-start=\"2206\" data-end=\"2467\"\u003eThis test set is an indispensable tool for every pond owner who takes the well-being of their fish and plants seriously. With the \u003cstrong data-start=\"2338\" data-end=\"2364\"\u003eColombo Water Test Lab\u003c\/strong\u003e, you always keep control over the water quality and can enjoy a healthy and clear pond.\u003c\/p\u003e","brand":"Colombo","offers":[{"title":"Default","offer_id":57524758937980,"sku":"05020292","price":47.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/colombo-test-lab-1.jpg?v=1790843169"},{"product_id":"quick-test-6-in-1-teststrips-pond-colombo","title":"Quick Test 6 in 1 Test Strips Pond - Colombo","description":"\u003cp data-start=\"658\" data-end=\"779\"\u003e\u003cstrong data-start=\"671\" data-end=\"779\"\u003eColombo Quick Test 6 in 1 Test Strips Pond – fast and complete water testing for ponds and koi ponds\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"781\" data-end=\"1199\"\u003eThe \u003cstrong data-start=\"784\" data-end=\"821\"\u003eQuick Test 7 in 1 Test Strips Pond\u003c\/strong\u003e by \u003cstrong data-start=\"826\" data-end=\"837\"\u003eColombo\u003c\/strong\u003e is a practical and reliable solution for quickly checking the \u003cstrong data-start=\"914\" data-end=\"932\"\u003ewater quality\u003c\/strong\u003e in ponds and koi ponds. With these test strips, you can measure \u003cstrong data-start=\"1001\" data-end=\"1038\"\u003eseven important water parameters\u003c\/strong\u003e in a short amount of time: \u003cstrong data-start=\"1040\" data-end=\"1046\"\u003epH\u003c\/strong\u003e, \u003cstrong data-start=\"1048\" data-end=\"1059\"\u003enitrite\u003c\/strong\u003e, \u003cstrong data-start=\"1061\" data-end=\"1072\"\u003enitrate\u003c\/strong\u003e, \u003cstrong data-start=\"1074\" data-end=\"1080\"\u003eKH\u003c\/strong\u003e, \u003cstrong data-start=\"1082\" data-end=\"1088\"\u003eGH\u003c\/strong\u003e, \u003cstrong data-start=\"1090\" data-end=\"1100\"\u003echlorine\u003c\/strong\u003e. This gives you an immediate, comprehensive, and clear overview of the current water conditions.\u003c\/p\u003e\n\u003cp data-start=\"1201\" data-end=\"1247\"\u003e\u003cstrong data-start=\"1201\" data-end=\"1247\"\u003eQuick overview of 6 important water values\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1249\" data-end=\"1643\"\u003eBy measuring several essential values at the same time, these test strips provide an efficient way to assess overall water quality. This makes it easier to detect deviations early and take timely action when the balance in the water is under pressure. This test set thus helps maintain a \u003cstrong data-start=\"1578\" data-end=\"1609\"\u003ehealthy biological balance\u003c\/strong\u003e in the pond or koi pond.\u003c\/p\u003e\n\u003cp data-start=\"1645\" data-end=\"1690\"\u003e\u003cstrong data-start=\"1645\" data-end=\"1690\"\u003eEasy to use and read instantly\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1692\" data-end=\"2086\"\u003eUsing the \u003cstrong data-start=\"1711\" data-end=\"1756\"\u003eColombo Quick Test 7 in 1 Test Strips Pond\u003c\/strong\u003e is easy and time-saving. Dip the strip in the water for a few seconds, compare the color-changed areas with the included \u003cstrong data-start=\"1888\" data-end=\"1905\"\u003ecolor chart\u003c\/strong\u003e, and read the results immediately. This allows you to quickly determine whether the water is suitable for your fish or whether additional measures are needed to improve the water quality.\u003c\/p\u003e\n\u003cp data-start=\"2088\" data-end=\"2140\"\u003e\u003cstrong data-start=\"2088\" data-end=\"2140\"\u003eHelps prevent stress, disease, and algae problems\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2142\" data-end=\"2496\"\u003eRegularly checking these seven parameters helps reduce risks such as \u003cstrong data-start=\"2237\" data-end=\"2247\"\u003estress\u003c\/strong\u003e, \u003cstrong data-start=\"2249\" data-end=\"2259\"\u003edisease\u003c\/strong\u003e, and \u003cstrong data-start=\"2263\" data-end=\"2281\"\u003ealgae problems\u003c\/strong\u003e. By recognizing deviations in the water values early, you can carry out more targeted maintenance and prevent problems before they affect the well-being of your fish or the stability of the pond system.\u003c\/p\u003e\n\u003cp data-start=\"2498\" data-end=\"2548\"\u003e\u003cstrong data-start=\"2498\" data-end=\"2548\"\u003eSupports a stable and healthy pond environment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2550\" data-end=\"2884\"\u003eGood water analysis is an important part of responsible pond maintenance. These test strips support an \u003cstrong data-start=\"2667\" data-end=\"2692\"\u003eoptimal pond environment\u003c\/strong\u003e in which fish can stay healthy and the biological balance is maintained. This makes this test set a valuable tool for both periodic checks and routine maintenance.\u003c\/p\u003e\n\u003cp data-start=\"2886\" data-end=\"2934\"\u003e\u003cstrong data-start=\"2886\" data-end=\"2934\"\u003eCompact and practical for regular use\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2936\" data-end=\"3239\"\u003eThanks to the \u003cstrong data-start=\"2947\" data-end=\"2970\"\u003ecompact packaging\u003c\/strong\u003e, the test strips are easy to store and always quickly available when you want to perform a check. This makes the set particularly suitable for pond owners who want to monitor the water quality systematically and be able to act quickly when necessary.\u003c\/p\u003e","brand":"Colombo","offers":[{"title":"Default","offer_id":57525400502652,"sku":"05020295","price":15.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/c4270f86-b9f0-474c-82c8-ce8c282c556a.png?v=1790853675"},{"product_id":"superfish-koi-pro-digi-test-4-in-1","title":"Koi pro digi test 4 in 1 - SuperFish","description":"\u003cp class=\"\" data-start=\"185\" data-end=\"261\"\u003e\u003cstrong data-start=\"185\" data-end=\"261\"\u003eDigital Water Meter for Aquariums – 4-in-1 Measurement for a Healthy Aquatic Environment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"\" data-start=\"263\" data-end=\"585\"\u003eThis \u003cstrong data-start=\"268\" data-end=\"291\"\u003edigital water meter\u003c\/strong\u003e is an essential tool for any aquarium enthusiast who wants to monitor water quality accurately. The meter measures four important parameters in one compact and user-friendly device: \u003cstrong data-start=\"485\" data-end=\"491\"\u003epH\u003c\/strong\u003e, \u003cstrong data-start=\"493\" data-end=\"516\"\u003econductivity (EC)\u003c\/strong\u003e, \u003cstrong data-start=\"518\" data-end=\"552\"\u003eTDS (total dissolved solids)\u003c\/strong\u003e, and \u003cstrong data-start=\"556\" data-end=\"584\"\u003ewater temperature (°C\/°F)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp class=\"\" data-start=\"587\" data-end=\"615\"\u003e\u003cstrong data-start=\"587\" data-end=\"615\"\u003eKey features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"616\" data-end=\"1049\"\u003e\n\n\u003cli class=\"\" data-start=\"616\" data-end=\"714\"\u003e\n\n\u003cp class=\"\" data-start=\"618\" data-end=\"714\"\u003e\u003cstrong data-start=\"618\" data-end=\"635\"\u003e4-in-1 measurement\u003c\/strong\u003e: Measure acidity (pH), conductivity (EC), TDS, and temperature with a single device\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"715\" data-end=\"849\"\u003e\n\n\u003cp class=\"\" data-start=\"717\" data-end=\"849\"\u003e\u003cstrong data-start=\"717\" data-end=\"751\"\u003eFast and accurate readings\u003c\/strong\u003e: Insert the meter into the aquarium water and receive reliable measurement results within seconds\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"850\" data-end=\"954\"\u003e\n\n\u003cp class=\"\" data-start=\"852\" data-end=\"954\"\u003e\u003cstrong data-start=\"852\" data-end=\"876\"\u003eEasy to use\u003c\/strong\u003e: Large, clear display and automatic shut-off for energy savings\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"955\" data-end=\"1049\"\u003e\n\n\u003cp class=\"\" data-start=\"957\" data-end=\"1049\"\u003e\u003cstrong data-start=\"957\" data-end=\"981\"\u003eCompact and portable\u003c\/strong\u003e: Ideal for use with aquariums, ponds, or hydroponic systems\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"\" data-start=\"1051\" data-end=\"1065\"\u003e\u003cstrong data-start=\"1051\" data-end=\"1065\"\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1066\" data-end=\"1188\"\u003e\n\n\u003cli class=\"\" data-start=\"1066\" data-end=\"1103\"\u003e\n\n\u003cp class=\"\" data-start=\"1068\" data-end=\"1103\"\u003e4 x LR44 batteries (included)\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"1104\" data-end=\"1156\"\u003e\n\n\u003cp class=\"\" data-start=\"1106\" data-end=\"1156\"\u003epH calibration powders for accurate adjustment\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"1157\" data-end=\"1188\"\u003e\n\n\u003cp class=\"\" data-start=\"1159\" data-end=\"1188\"\u003eQuick start guide\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"\" data-start=\"1190\" data-end=\"1219\"\u003e\u003cstrong data-start=\"1190\" data-end=\"1219\"\u003eTechnical specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1220\" data-end=\"1555\"\u003e\n\n\u003cli class=\"\" data-start=\"1220\" data-end=\"1259\"\u003e\n\n\u003cp class=\"\" data-start=\"1222\" data-end=\"1259\"\u003e\u003cstrong data-start=\"1222\" data-end=\"1239\"\u003epH measurement range\u003c\/strong\u003e: approx. 0.00 – 14.00\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"1260\" data-end=\"1331\"\u003e\n\n\u003cp class=\"\" data-start=\"1262\" data-end=\"1331\"\u003e\u003cstrong data-start=\"1262\" data-end=\"1283\"\u003eEC\/TDS measurement range\u003c\/strong\u003e: wide range suitable for fresh and salt water\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"1332\" data-end=\"1378\"\u003e\n\n\u003cp class=\"\" data-start=\"1334\" data-end=\"1378\"\u003e\u003cstrong data-start=\"1334\" data-end=\"1355\"\u003eTemperature range\u003c\/strong\u003e: °C and °F selectable\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"1379\" data-end=\"1432\"\u003e\n\n\u003cp class=\"\" data-start=\"1381\" data-end=\"1432\"\u003e\u003cstrong data-start=\"1381\" data-end=\"1392\"\u003eDisplay\u003c\/strong\u003e: Digital, with backlight\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"1433\" data-end=\"1482\"\u003e\n\n\u003cp class=\"\" data-start=\"1435\" data-end=\"1482\"\u003e\u003cstrong data-start=\"1435\" data-end=\"1446\"\u003ePower supply\u003c\/strong\u003e: 4 x LR44 batteries (included)\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"1483\" data-end=\"1555\"\u003e\n\n\u003cp class=\"\" data-start=\"1485\" data-end=\"1555\"\u003e\u003cstrong data-start=\"1485\" data-end=\"1515\"\u003eAutomatic shut-off\u003c\/strong\u003e: For energy savings when not in use\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"\" data-start=\"1557\" data-end=\"1571\"\u003e\u003cstrong data-start=\"1557\" data-end=\"1571\"\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1572\" data-end=\"1810\"\u003e\n\n\u003cli class=\"\" data-start=\"1572\" data-end=\"1647\"\u003e\n\n\u003cp class=\"\" data-start=\"1574\" data-end=\"1647\"\u003eReliable measurement for optimal living conditions for fish and plants\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"1648\" data-end=\"1705\"\u003e\n\n\u003cp class=\"\" data-start=\"1650\" data-end=\"1705\"\u003eCompact design, easy to carry or store\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"1706\" data-end=\"1763\"\u003e\n\n\u003cp class=\"\" data-start=\"1708\" data-end=\"1763\"\u003eNo separate devices needed for different measurements\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"\" data-start=\"1764\" data-end=\"1810\"\u003e\n\n\u003cp class=\"\" data-start=\"1766\" data-end=\"1810\"\u003eIdeal for both beginner and experienced aquarists\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"\" data-start=\"1812\" data-end=\"1935\"\u003e\u003cstrong data-start=\"1812\" data-end=\"1935\"\u003eMaintain stable water parameters with the Digital Aquarium Water Meter and provide your fish and plants with the best living environment.\u003c\/strong\u003e\u003c\/p\u003e","brand":"SuperFish","offers":[{"title":"Default","offer_id":57525436973436,"sku":"06070500","price":53.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/superfish-digitest-4-in-1-meter1.webp?v=1790854703"},{"product_id":"sera-aqua-test-box-cu","title":"Aqua Test Box (+ Cu) - Sera","description":"\u003cp data-start=\"676\" data-end=\"1125\"\u003eWith the \u003cstrong data-start=\"683\" data-end=\"712\"\u003eSera Aqua Test Box (+ Cu)\u003c\/strong\u003e, you have a comprehensive test kit for professionally monitoring aquarium water. Regular water analysis is essential to keep the aquarium stable, healthy, and safe. By regularly measuring the most important water parameters, you can detect deviations early and take targeted action before problems such as algae growth, fish stress, or disruption of the biological balance occur.\u003c\/p\u003e\n\u003cp data-start=\"1127\" data-end=\"1771\"\u003eThis test box contains tests for \u003cstrong data-start=\"1158\" data-end=\"1269\"\u003epH, total hardness, carbonate hardness, ammonium\/ammonia, nitrite, nitrate, phosphate, iron, and copper\u003c\/strong\u003e. This provides an in-depth overview of the chemical and biological water quality. The copper test makes this version particularly suitable for aquariums where copper levels are critical, for example with sensitive fish or invertebrates such as shrimp, crayfish, and snails. MaJa Koi states that this set is intended for experienced aquarists who want to closely monitor conditions in the aquarium and take appropriate measures to ensure a healthy environment.\u003c\/p\u003e\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1773\" data-end=\"1795\"\u003eKey points\u003c\/h3\u003e\n\u003cul data-start=\"1797\" data-end=\"2455\"\u003e\n\n\u003cli data-section-id=\"1kszr0v\" data-start=\"1797\" data-end=\"1854\"\u003eComplete test kit for comprehensive \u003cstrong data-start=\"1836\" data-end=\"1852\"\u003ewater analysis\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"12jcm8c\" data-start=\"1855\" data-end=\"1902\"\u003eMeasures \u003cstrong data-start=\"1862\" data-end=\"1900\"\u003e9 important aquarium water parameters\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1flc8uw\" data-start=\"1903\" data-end=\"1970\"\u003eChecks \u003cstrong data-start=\"1917\" data-end=\"1968\"\u003epH, GH, KH, NH4\/NH3, NO2, NO3, PO4, Fe, and copper\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1amswf3\" data-start=\"1971\" data-end=\"2036\"\u003eHelps detect deviations in water quality early\u003c\/li\u003e\n\n\u003cli data-section-id=\"b9avzr\" data-start=\"2037\" data-end=\"2103\"\u003eSupports the prevention of, among other things, \u003cstrong data-start=\"2087\" data-end=\"2101\"\u003ealgae growth\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1casxmg\" data-start=\"2104\" data-end=\"2182\"\u003eProvides broad insight into the biological and chemical balance of the aquarium\u003c\/li\u003e\n\n\u003cli data-section-id=\"161mfon\" data-start=\"2183\" data-end=\"2245\"\u003eParticularly suitable when monitoring \u003cstrong data-start=\"2220\" data-end=\"2229\"\u003ecopper\u003c\/strong\u003e is important\u003c\/li\u003e\n\n\u003cli data-section-id=\"q79ro4\" data-start=\"2246\" data-end=\"2310\"\u003ePractical for aquariums with sensitive fish or invertebrates\u003c\/li\u003e\n\n\u003cli data-section-id=\"1f5iway\" data-start=\"2311\" data-end=\"2384\"\u003eSuitable for regular monitoring and professional aquarium maintenance\u003c\/li\u003e\n\n\u003cli data-section-id=\"ql8x1h\" data-start=\"2385\" data-end=\"2455\"\u003eHelps enable targeted action without unnecessary use of chemicals\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525811347836,"sku":"04002","price":99.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/04002.png?v=1790860627"},{"product_id":"aqua-test-box-cl-sera","title":"Aqua Test Box (+ Cl) - Sera","description":"\u003cp data-start=\"692\" data-end=\"1170\"\u003eWith the \u003cstrong data-start=\"699\" data-end=\"728\"\u003eSera Aqua Test Box (+ Cl)\u003c\/strong\u003e, you get a comprehensive test kit for thoroughly analyzing aquarium water. This box is designed for experienced and advanced aquarium enthusiasts who want to actively maintain a stable, healthy, and reliable aquatic environment. By testing regularly, you can detect deviating water parameters early and take preventive action before problems such as algae growth, fish stress, or disruption of the biological balance occur.\u003c\/p\u003e\n\u003cp data-start=\"1172\" data-end=\"1615\"\u003eThe test box contains tests for \u003cstrong data-start=\"1200\" data-end=\"1312\"\u003epH, total hardness, carbonate hardness, ammonium\/ammonia, nitrite, nitrate, phosphate, iron, and chlorine\u003c\/strong\u003e. This gives you a broad and complete picture of the current water quality. According to MaJa Koi, this comprehensive set helps to professionally analyze and specifically adjust the aquarium water without having to immediately resort to unnecessary chemical products.\u003c\/p\u003e\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1617\" data-end=\"1639\"\u003eKey points\u003c\/h3\u003e\n\u003cul data-start=\"1641\" data-end=\"2301\"\u003e\n\n\u003cli data-section-id=\"1kszr0v\" data-start=\"1641\" data-end=\"1698\"\u003eComplete test kit for comprehensive \u003cstrong data-start=\"1680\" data-end=\"1696\"\u003ewater analysis\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"12jcm8c\" data-start=\"1699\" data-end=\"1746\"\u003eMeasures \u003cstrong data-start=\"1706\" data-end=\"1744\"\u003e9 important aquarium water parameters\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1ptnvm6\" data-start=\"1747\" data-end=\"1815\"\u003eChecks \u003cstrong data-start=\"1761\" data-end=\"1813\"\u003epH, GH, KH, NH4\/NH3, NO2, NO3, PO4, Fe, and chlorine\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1amswf3\" data-start=\"1816\" data-end=\"1881\"\u003eHelps detect deviations in water quality early\u003c\/li\u003e\n\n\u003cli data-section-id=\"b9avzr\" data-start=\"1882\" data-end=\"1948\"\u003eSupports preventive management of, among other things, \u003cstrong data-start=\"1932\" data-end=\"1946\"\u003ealgae growth\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1l3pnj5\" data-start=\"1949\" data-end=\"2008\"\u003eSuitable for experienced and advanced aquarium enthusiasts\u003c\/li\u003e\n\n\u003cli data-section-id=\"1casxmg\" data-start=\"2009\" data-end=\"2087\"\u003eProvides broad insight into the biological and chemical balance of the aquarium\u003c\/li\u003e\n\n\u003cli data-section-id=\"vriz63\" data-start=\"2088\" data-end=\"2162\"\u003ePractical for regular monitoring and professional aquarium maintenance\u003c\/li\u003e\n\n\u003cli data-section-id=\"1b5x4qt\" data-start=\"2163\" data-end=\"2235\"\u003eHelps take targeted action without unnecessary use of chemical products\u003c\/li\u003e\n\n\u003cli data-section-id=\"1jk6fi1\" data-start=\"2236\" data-end=\"2301\"\u003eIdeal for aquariums where stable water parameters are crucial\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525811544444,"sku":"04003","price":87.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/sera-aqua-test-box-pluscl.webp?v=1790860636"},{"product_id":"sera-quick-test-6-in-1","title":"Quick Test 6 in 1 - Sera","description":"\u003cdiv class=\"relative basis-auto flex-col -mb-(--composer-overlap-px) pb-(--composer-overlap-px) [--composer-overlap-px:28px] grow flex\"\u003e\n\n\u003cdiv class=\"flex flex-col text-sm\"\u003e\n\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-18\" data-is-intersecting=\"true\"\u003e\n\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-18\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-18\" data-testid=\"conversation-turn-38\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"028cea38-d085-4c65-a803-5d378e252592\" data-turn-start-message=\"true\" data-message-model-slug=\"gpt-5-5-thinking\"\u003e\n\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\n\u003cp data-start=\"665\" data-end=\"1057\"\u003eWith the \u003cstrong data-start=\"672\" data-end=\"698\"\u003eSera Quick Test 6 in 1\u003c\/strong\u003e, you can quickly and easily check the most important water parameters of your aquarium with just one test strip. This makes the test ideal for a quick routine check or an immediate safety check when you have doubts about the water quality. In no time, you will gain insight into several crucial parameters, allowing you to quickly see whether the aquarium water is balanced.\u003c\/p\u003e\n\n\u003cp data-start=\"1059\" data-end=\"1560\"\u003eThe test measures \u003cstrong data-start=\"1072\" data-end=\"1106\"\u003epH, kH, gH, NO2, NO3 and chlorine\u003c\/strong\u003e. This allows you to check, among other things, the acidity, hardness, carbonate hardness, nitrite, nitrate and chlorine levels. MaJa Koi lists the Sera Quick Test 6 in 1 in the aquarium test sets category, where the product is offered as a quick testing solution for aquarium water. The official Sera product information confirms that this quick test is intended for the quick and accurate measurement of these six water parameters.\u003c\/p\u003e\n\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1562\" data-end=\"1584\"\u003eKey points\u003c\/h3\u003e\n\n\u003cul data-start=\"1586\" data-end=\"2191\"\u003e\n\n\u003cli data-section-id=\"zi6b06\" data-start=\"1586\" data-end=\"1645\"\u003eMeasure \u003cstrong data-start=\"1593\" data-end=\"1625\"\u003esix important water parameters\u003c\/strong\u003e with one test strip\u003c\/li\u003e\n\n\u003cli data-section-id=\"mbs32a\" data-start=\"1646\" data-end=\"1696\"\u003eChecks \u003cstrong data-start=\"1660\" data-end=\"1694\"\u003epH, kH, gH, NO2, NO3 and chlorine\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"14x6uci\" data-start=\"1697\" data-end=\"1753\"\u003eIdeal for quick routine checks of aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"1nl54i2\" data-start=\"1754\" data-end=\"1810\"\u003ePractical when in doubt about the current water quality\u003c\/li\u003e\n\n\u003cli data-section-id=\"uxcphq\" data-start=\"1811\" data-end=\"1865\"\u003eHelps to detect abnormal water parameters in a timely manner\u003c\/li\u003e\n\n\u003cli data-section-id=\"4s63sa\" data-start=\"1866\" data-end=\"1920\"\u003eSuitable for beginners and experienced aquarium owners\u003c\/li\u003e\n\n\u003cli data-section-id=\"1bxgloz\" data-start=\"1921\" data-end=\"1985\"\u003eSupports a stable environment for fish and plants\u003c\/li\u003e\n\n\u003cli data-section-id=\"1dojg3n\" data-start=\"1986\" data-end=\"2040\"\u003eQuick testing method without complicated procedures\u003c\/li\u003e\n\n\u003cli data-section-id=\"1u8mrik\" data-start=\"2041\" data-end=\"2128\"\u003eConvenient as an initial indication before potentially testing more accurately with drop tests\u003c\/li\u003e\n\n\u003cli data-section-id=\"8nrvhh\" data-start=\"2129\" data-end=\"2191\"\u003eSuitable as a regular part of routine aquarium maintenance\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/section\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525811904892,"sku":"04960","price":18.39,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/3506-110150bb512x512.webp?v=1790860645"},{"product_id":"sera-aqua-test-set","title":"Aqua Test Set - Sera","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-17\" data-is-intersecting=\"true\"\u003e\n\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-17\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-17\" data-testid=\"conversation-turn-36\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"adf3f27c-3cef-4edf-a736-914f828bf0bb\" data-turn-start-message=\"true\" data-message-model-slug=\"gpt-5-5-thinking\"\u003e\n\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\n\u003cp data-start=\"680\" data-end=\"994\"\u003eWith the \u003cstrong data-start=\"687\" data-end=\"709\"\u003eSera Aqua Test Set\u003c\/strong\u003e, you have a compact and reliable basic set for checking the most important water parameters in your aquarium. Regular testing is essential to identify problems early and keep the aquarium water healthy, stable, and safe for fish, plants, and beneficial bacteria.\u003c\/p\u003e\n\n\u003cp data-start=\"996\" data-end=\"1546\"\u003eThis set contains tests for \u003cstrong data-start=\"1022\" data-end=\"1035\"\u003epH level\u003c\/strong\u003e, \u003cstrong data-start=\"1037\" data-end=\"1056\"\u003etotal hardness\u003c\/strong\u003e, \u003cstrong data-start=\"1058\" data-end=\"1079\"\u003ecarbonate hardness\u003c\/strong\u003e, and \u003cstrong data-start=\"1083\" data-end=\"1104\"\u003eammonium\/ammonia\u003c\/strong\u003e. This allows you to check several crucial parameters that affect the well-being of aquarium inhabitants and the biological balance at once. MaJa Koi describes the set as an indispensable tool for both experienced and advanced aquarium enthusiasts and notes that regular monitoring helps to intervene preventively in problems such as algae, without being directly dependent on chemical products.\u003c\/p\u003e\n\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1548\" data-end=\"1570\"\u003eKey points\u003c\/h3\u003e\n\n\u003cul data-start=\"1572\" data-end=\"2192\"\u003e\n\n\u003cli data-section-id=\"1x4yr90\" data-start=\"1572\" data-end=\"1650\"\u003eComplete basic set for testing important \u003cstrong data-start=\"1624\" data-end=\"1648\"\u003eaquarium water parameters\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1ilfijm\" data-start=\"1651\" data-end=\"1702\"\u003eMeasures the \u003cstrong data-start=\"1661\" data-end=\"1674\"\u003epH level\u003c\/strong\u003e \/ acidity of the water\u003c\/li\u003e\n\n\u003cli data-section-id=\"1b8jztz\" data-start=\"1703\" data-end=\"1737\"\u003eMeasures the \u003cstrong data-start=\"1713\" data-end=\"1735\"\u003etotal hardness gH\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"173w3nj\" data-start=\"1738\" data-end=\"1801\"\u003eMeasures the \u003cstrong data-start=\"1748\" data-end=\"1772\"\u003ecarbonate hardness kH\u003c\/strong\u003e for better pH stability\u003c\/li\u003e\n\n\u003cli data-section-id=\"wzrjr8\" data-start=\"1802\" data-end=\"1840\"\u003eMeasures \u003cstrong data-start=\"1809\" data-end=\"1838\"\u003eammonium\/ammonia NH4\/NH3\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1din5il\" data-start=\"1841\" data-end=\"1907\"\u003eHelps identify water quality problems early\u003c\/li\u003e\n\n\u003cli data-section-id=\"8l7gao\" data-start=\"1908\" data-end=\"1983\"\u003eSupports a stable and healthy environment for fish and plants\u003c\/li\u003e\n\n\u003cli data-section-id=\"1nvwdzh\" data-start=\"1984\" data-end=\"2053\"\u003ePractical for regular aquarium maintenance and preventive monitoring\u003c\/li\u003e\n\n\u003cli data-section-id=\"4f03rz\" data-start=\"2054\" data-end=\"2120\"\u003eSuitable for both experienced and advanced aquarium enthusiasts\u003c\/li\u003e\n\n\u003cli data-section-id=\"pp90b2\" data-start=\"2121\" data-end=\"2192\"\u003eHelps with targeted adjustments without unnecessary use of chemical products\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e \u003c\/div\u003e\n\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\n\u003cdiv class=\"text-center\"\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/section\u003e\n\u003cdiv class=\"contents\"\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"pointer-events-none -mt-px h-px translate-y-[calc(var(--scroll-root-safe-area-inset-bottom)-14*var(--spacing))]\" aria-hidden=\"true\"\u003e \u003c\/div\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525812068732,"sku":"04000","price":34.69,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/sera-aqua-test-set.webp?v=1790860653"},{"product_id":"sera-ph-test","title":"pH Test - Sera","description":"\u003cp data-start=\"688\" data-end=\"1071\"\u003eWith the \u003cstrong data-start=\"695\" data-end=\"711\"\u003eSera pH Test\u003c\/strong\u003e, you can easily check the \u003cstrong data-start=\"739\" data-end=\"770\"\u003eacidity of aquarium water\u003c\/strong\u003e. The pH value is one of the most important water parameters in the aquarium, because it directly affects the well-being of fish, plants, and beneficial bacteria. A pH value that is too high, too low, or fluctuating greatly can cause stress to aquarium inhabitants and disrupt the biological balance.\u003c\/p\u003e\n\u003cp data-start=\"1073\" data-end=\"1470\"\u003eThis test is a practical basic for anyone who wants to seriously monitor the water quality. By regularly measuring the pH value, you can detect deviations early and make targeted adjustments where necessary. MaJa Koi places this test within the aquarium test sets category and identifies the pH value as an important parameter for the well-being of aquarium inhabitants.\u003c\/p\u003e\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1472\" data-end=\"1494\"\u003eImportant points\u003c\/h3\u003e\n\u003cul data-start=\"1496\" data-end=\"2063\"\u003e\n\n\u003cli data-section-id=\"foma3g\" data-start=\"1496\" data-end=\"1551\"\u003eMeasures the \u003cstrong data-start=\"1506\" data-end=\"1519\"\u003epH value\u003c\/strong\u003e \/ acidity of aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"iejs8c\" data-start=\"1552\" data-end=\"1616\"\u003eImportant for the well-being of fish, plants, and bacteria\u003c\/li\u003e\n\n\u003cli data-section-id=\"16nt6n7\" data-start=\"1617\" data-end=\"1668\"\u003eHelps to detect \u003cstrong data-start=\"1625\" data-end=\"1645\"\u003epH fluctuations\u003c\/strong\u003e in time\u003c\/li\u003e\n\n\u003cli data-section-id=\"1dger21\" data-start=\"1669\" data-end=\"1723\"\u003ePractical when starting up a new aquarium\u003c\/li\u003e\n\n\u003cli data-section-id=\"88s7rl\" data-start=\"1724\" data-end=\"1788\"\u003eSuitable for regular monitoring of the \u003cstrong data-start=\"1768\" data-end=\"1786\"\u003ewater quality\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1guwdia\" data-start=\"1789\" data-end=\"1839\"\u003eSupports a more stable biological balance\u003c\/li\u003e\n\n\u003cli data-section-id=\"9ne6x9\" data-start=\"1840\" data-end=\"1889\"\u003eIdeal as a basic test within aquarium maintenance\u003c\/li\u003e\n\n\u003cli data-section-id=\"fruk9q\" data-start=\"1890\" data-end=\"1951\"\u003eMakes it clear whether water parameters need to be adjusted\u003c\/li\u003e\n\n\u003cli data-section-id=\"157ga09\" data-start=\"1952\" data-end=\"2002\"\u003eSuitable for aquariums with sensitive fish species\u003c\/li\u003e\n\n\u003cli data-section-id=\"1v0g252\" data-start=\"2003\" data-end=\"2063\"\u003eHelps to better adapt the aquarium water to its inhabitants\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525812167036,"sku":"04310","price":8.89,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/3509-2ddd12f5512x512.webp?v=1790860662"},{"product_id":"sera-kh-test","title":"kH Test - Sera","description":"\u003cp data-start=\"697\" data-end=\"1041\"\u003eWith the \u003cstrong data-start=\"704\" data-end=\"720\"\u003eSera kH Test\u003c\/strong\u003e, you can easily measure the \u003cstrong data-start=\"742\" data-end=\"763\"\u003ecarbonate hardness\u003c\/strong\u003e of aquarium water. The KH value plays an important role in the stability of the pH level. When the carbonate hardness is too low, the pH can fluctuate more quickly. If the value is too high, it can be more difficult to create softer water or specific water conditions.\u003c\/p\u003e\n\u003cp data-start=\"1043\" data-end=\"1460\"\u003eThis test is suitable for both \u003cstrong data-start=\"1076\" data-end=\"1110\"\u003efreshwater and saltwater aquariums\u003c\/strong\u003e and helps you to accurately monitor the water quality. According to MaJa Koi, the test is suitable for approximately \u003cstrong data-start=\"1220\" data-end=\"1232\"\u003e390 °dKH\u003c\/strong\u003e and the package contains \u003cstrong data-start=\"1256\" data-end=\"1265\"\u003e15 ml\u003c\/strong\u003e of test liquid. If the KH value is too low, the carbonate hardness can be increased; in cases of elevated values, filtration through peat can help in freshwater aquariums.\u003c\/p\u003e\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1462\" data-end=\"1484\"\u003eKey points\u003c\/h3\u003e\n\u003cul data-start=\"1486\" data-end=\"2043\"\u003e\n\n\u003cli data-section-id=\"z3pdfn\" data-start=\"1486\" data-end=\"1537\"\u003eMeasures the \u003cstrong data-start=\"1496\" data-end=\"1517\"\u003ecarbonate hardness\u003c\/strong\u003e of aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"1r09kme\" data-start=\"1538\" data-end=\"1589\"\u003eSuitable for \u003cstrong data-start=\"1554\" data-end=\"1587\"\u003efreshwater and saltwater aquariums\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"2e5bnd\" data-start=\"1590\" data-end=\"1638\"\u003eHelps to better monitor \u003cstrong data-start=\"1601\" data-end=\"1619\"\u003epH stability\u003c\/strong\u003e\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"of9j78\" data-start=\"1639\" data-end=\"1697\"\u003eImportant for fluctuating or unstable water values\u003c\/li\u003e\n\n\u003cli data-section-id=\"dynfw6\" data-start=\"1698\" data-end=\"1761\"\u003ePractical for adjusting the water to fish and plants\u003c\/li\u003e\n\n\u003cli data-section-id=\"88s7rl\" data-start=\"1762\" data-end=\"1826\"\u003eSuitable for regular monitoring of the \u003cstrong data-start=\"1806\" data-end=\"1824\"\u003ewater quality\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"tp05gg\" data-start=\"1827\" data-end=\"1894\"\u003eIf the KH is too low, the carbonate hardness can be specifically increased\u003c\/li\u003e\n\n\u003cli data-section-id=\"19bf2gz\" data-start=\"1895\" data-end=\"1969\"\u003eIf the KH is elevated, filtration through peat can be applied in freshwater\u003c\/li\u003e\n\n\u003cli data-section-id=\"bqhlt6\" data-start=\"1970\" data-end=\"2009\"\u003eSuitable for approximately \u003cstrong data-start=\"1995\" data-end=\"2007\"\u003e390 °dKH\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"13l3mo7\" data-start=\"2010\" data-end=\"2043\"\u003eContents: \u003cstrong data-start=\"2020\" data-end=\"2029\"\u003e15 ml\u003c\/strong\u003e of test liquid\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525812298108,"sku":"04210","price":8.89,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/sera-kh-test.webp?v=1790860671"},{"product_id":"sera-gh-test","title":"gH Test - Sera","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-14\" data-is-intersecting=\"true\"\u003e\n\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-14\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-14\" data-testid=\"conversation-turn-30\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"1cd0a084-caf8-4a22-b590-bae7832d163e\" data-turn-start-message=\"true\" data-message-model-slug=\"gpt-5-5-thinking\"\u003e\n\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\n\u003cp data-start=\"729\" data-end=\"1081\"\u003eWith the \u003cstrong data-start=\"736\" data-end=\"752\"\u003eSera gH Test\u003c\/strong\u003e, you can easily measure the \u003cstrong data-start=\"774\" data-end=\"793\"\u003etotal hardness\u003c\/strong\u003e of the aquarium water. Total hardness indicates how many dissolved minerals, such as calcium and magnesium, are present in the water. This value is important for the health of fish, shrimp, and plants, as each species has specific requirements for water hardness.\u003c\/p\u003e\n\n\u003cp data-start=\"1083\" data-end=\"1504\"\u003eBy regularly checking the gH value, you can better tailor the aquarium water to the natural habitat of your animals. According to MaJa Koi, the test is suitable for approximately \u003cstrong data-start=\"1266\" data-end=\"1278\"\u003e420 °dGH\u003c\/strong\u003e and the package contains \u003cstrong data-start=\"1302\" data-end=\"1311\"\u003e15 ml\u003c\/strong\u003e of test liquid. If the total hardness is too low, mineral supplementation can be used; if the total hardness is too high, mixing with reverse osmosis water can help.\u003c\/p\u003e\n\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1506\" data-end=\"1528\"\u003eKey points\u003c\/h3\u003e\n\n\u003cul data-start=\"1530\" data-end=\"2089\"\u003e\n\n\u003cli data-section-id=\"73kgf7\" data-start=\"1530\" data-end=\"1579\"\u003eMeasures the \u003cstrong data-start=\"1540\" data-end=\"1559\"\u003etotal hardness\u003c\/strong\u003e of aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"glv37z\" data-start=\"1580\" data-end=\"1635\"\u003eProvides insight into the amount of dissolved minerals\u003c\/li\u003e\n\n\u003cli data-section-id=\"b9epw1\" data-start=\"1636\" data-end=\"1691\"\u003eImportant for fish, shrimp, and aquarium plants\u003c\/li\u003e\n\n\u003cli data-section-id=\"9t2yf6\" data-start=\"1692\" data-end=\"1764\"\u003eHelps better tailor water parameters to the needs of the animals\u003c\/li\u003e\n\n\u003cli data-section-id=\"153urfr\" data-start=\"1765\" data-end=\"1814\"\u003ePractical for softwater and hardwater aquariums\u003c\/li\u003e\n\n\u003cli data-section-id=\"88s7rl\" data-start=\"1815\" data-end=\"1879\"\u003eSuitable for regular monitoring of \u003cstrong data-start=\"1859\" data-end=\"1877\"\u003ewater quality\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"l8la6i\" data-start=\"1880\" data-end=\"1943\"\u003eIf hardness is too low, the mineral balance can be increased\u003c\/li\u003e\n\n\u003cli data-section-id=\"1athcfw\" data-start=\"1944\" data-end=\"2015\"\u003eIf hardness is too high, reverse osmosis water can be used to lower it\u003c\/li\u003e\n\n\u003cli data-section-id=\"lb7ey\" data-start=\"2016\" data-end=\"2055\"\u003eSuitable for approximately \u003cstrong data-start=\"2041\" data-end=\"2053\"\u003e420 °dGH\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"13l3mo7\" data-start=\"2056\" data-end=\"2089\"\u003eContents: \u003cstrong data-start=\"2066\" data-end=\"2075\"\u003e15 ml\u003c\/strong\u003e of test liquid\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e \u003c\/div\u003e\n\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\n\u003cdiv class=\"text-center\"\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/section\u003e\n\u003cdiv class=\"contents\"\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"pointer-events-none -mt-px h-px translate-y-[calc(var(--scroll-root-safe-area-inset-bottom)-14*var(--spacing))]\" aria-hidden=\"true\"\u003e \u003c\/div\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525812396412,"sku":"04110","price":8.89,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/sera-gh-test.webp?v=1790860680"},{"product_id":"sera-ammonium-ammoniak-test-nh4-nh3","title":"Ammonium\/ammonia Test (NH4\/NH3) - Sera","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-13\" data-is-intersecting=\"true\"\u003e\n\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-13\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-13\" data-testid=\"conversation-turn-28\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"8025a7dc-31d7-4531-8239-4f4ff426f3a5\" data-message-model-slug=\"gpt-5-5-thinking\" data-turn-start-message=\"true\"\u003e\n\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\n\u003cp data-start=\"695\" data-end=\"1055\"\u003eWith the \u003cstrong data-start=\"702\" data-end=\"741\"\u003eSera Ammonium\/Ammonia Test NH4\/NH3\u003c\/strong\u003e, you can easily check the total concentration of \u003cstrong data-start=\"789\" data-end=\"813\"\u003eammonium and ammonia\u003c\/strong\u003e in aquarium water. These substances are produced, among other things, by fish waste, leftover food, and the decomposition of organic material. When biological filtration is insufficient or the aquarium becomes unbalanced, levels can rise quickly.\u003c\/p\u003e\n\n\u003cp data-start=\"1057\" data-end=\"1378\"\u003eEspecially \u003cstrong data-start=\"1064\" data-end=\"1080\"\u003eammonia NH3\u003c\/strong\u003e poses a risk to fish. The ratio between ammonium and ammonia is strongly related to the \u003cstrong data-start=\"1178\" data-end=\"1191\"\u003epH level\u003c\/strong\u003e: at higher pH levels, more toxic ammonia can be produced. This test gives you quick insight into current water safety and allows you to take targeted action before fish are harmed.\u003c\/p\u003e\n\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1380\" data-end=\"1402\"\u003eKey points\u003c\/h3\u003e\n\n\u003cul data-start=\"1404\" data-end=\"2087\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\n\u003cli data-section-id=\"1quwtny\" data-start=\"1404\" data-end=\"1477\"\u003eMeasures the total concentration of \u003cstrong data-start=\"1434\" data-end=\"1458\"\u003eammonium and ammonia\u003c\/strong\u003e in aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"5wj1ye\" data-start=\"1478\" data-end=\"1532\"\u003eHelps detect toxic \u003cstrong data-start=\"1494\" data-end=\"1509\"\u003eNH3 levels\u003c\/strong\u003e in time\u003c\/li\u003e\n\n\u003cli data-section-id=\"lrxuxv\" data-start=\"1533\" data-end=\"1613\"\u003eImportant for newly set up aquariums or a disrupted biological balance\u003c\/li\u003e\n\n\u003cli data-section-id=\"1021nl9\" data-start=\"1614\" data-end=\"1668\"\u003eAmmonia can be harmful and toxic to fish\u003c\/li\u003e\n\n\u003cli data-section-id=\"1abjuwx\" data-start=\"1669\" data-end=\"1740\"\u003eThe ratio between NH4 and NH3 depends on the \u003cstrong data-start=\"1725\" data-end=\"1738\"\u003epH level\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"smjayr\" data-start=\"1741\" data-end=\"1817\"\u003ePractical for high fish stocking, leftover food, or organic load\u003c\/li\u003e\n\n\u003cli data-section-id=\"ne41ve\" data-start=\"1818\" data-end=\"1876\"\u003eSupports better control over the \u003cstrong data-start=\"1856\" data-end=\"1874\"\u003ewater quality\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1kddo5\" data-start=\"1877\" data-end=\"1936\"\u003eSuitable as part of regular aquarium maintenance\u003c\/li\u003e\n\n\u003cli data-section-id=\"6of2f5\" data-start=\"1937\" data-end=\"2003\"\u003eHelps identify biological filtration problems more quickly\u003c\/li\u003e\n\n\u003cli data-section-id=\"a58ufu\" data-start=\"2004\" data-end=\"2087\" data-is-last-node=\"\"\u003e60x\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e \u003c\/div\u003e\n\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\n\u003cdiv class=\"text-center\"\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/section\u003e\n\u003cdiv class=\"contents\"\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"pointer-events-none -mt-px h-px translate-y-[calc(var(--scroll-root-safe-area-inset-bottom)-14*var(--spacing))]\" aria-hidden=\"true\"\u003e \u003c\/div\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525812560252,"sku":"04910","price":16.89,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/sera-nh4-nh3-test.webp?v=1790860689"},{"product_id":"sera-nitriet-test-no2","title":"Nitrite Test (NO2) - Sera","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-11\" data-is-intersecting=\"true\"\u003e\n\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-11\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-11\" data-testid=\"conversation-turn-24\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"7a8349b8-297e-4b72-b77a-84c23bef7099\" data-turn-start-message=\"true\" data-message-model-slug=\"gpt-5-5-thinking\"\u003e\n\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\n\u003cp data-start=\"725\" data-end=\"1109\"\u003eWith the \u003cstrong data-start=\"732\" data-end=\"757\"\u003eSera Nitrite Test NO2\u003c\/strong\u003e, you can quickly and reliably check the \u003cstrong data-start=\"796\" data-end=\"814\"\u003enitrite level\u003c\/strong\u003e in aquarium water. Nitrite is highly toxic to fish and can develop when the biological filtration is not yet working sufficiently or when the biological balance is disrupted. By regularly measuring the NO2 level, you can immediately see whether the water is safe and take timely action.\u003c\/p\u003e\n\n\u003cp data-start=\"1111\" data-end=\"1622\"\u003eThis test is suitable for both \u003cstrong data-start=\"1144\" data-end=\"1178\"\u003efreshwater and saltwater aquariums\u003c\/strong\u003e and is an important tool when setting up a new aquarium, after filter maintenance, or in case of suspicious fish reactions. MaJa Koi states that the test easily and safely determines the nitrite level and that the contents are sufficient for approximately \u003cstrong data-start=\"1426\" data-end=\"1441\"\u003e75 tests\u003c\/strong\u003e. For slightly elevated nitrite levels, bacterial products can provide support; for high nitrite levels, rapid water treatment is required.\u003c\/p\u003e\n\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1624\" data-end=\"1646\"\u003eKey points\u003c\/h3\u003e\n\n\u003cul data-start=\"1648\" data-end=\"2257\"\u003e\n\n\u003cli data-section-id=\"yo2uoi\" data-start=\"1648\" data-end=\"1696\"\u003eMeasure the \u003cstrong data-start=\"1659\" data-end=\"1677\"\u003enitrite level\u003c\/strong\u003e in aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"1r09kme\" data-start=\"1697\" data-end=\"1748\"\u003eSuitable for \u003cstrong data-start=\"1713\" data-end=\"1746\"\u003efreshwater and saltwater aquariums\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"180v4cg\" data-start=\"1749\" data-end=\"1803\"\u003eHelps to detect toxic \u003cstrong data-start=\"1765\" data-end=\"1780\"\u003eNO2 levels\u003c\/strong\u003e in time\u003c\/li\u003e\n\n\u003cli data-section-id=\"1lgkhhg\" data-start=\"1804\" data-end=\"1851\"\u003eImportant for a newly set up aquarium\u003c\/li\u003e\n\n\u003cli data-section-id=\"10glvpf\" data-start=\"1852\" data-end=\"1924\"\u003ePractical after filter maintenance or disruption of the biological balance\u003c\/li\u003e\n\n\u003cli data-section-id=\"ne41ve\" data-start=\"1925\" data-end=\"1983\"\u003eSupports better control over the \u003cstrong data-start=\"1963\" data-end=\"1981\"\u003ewater quality\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"r1qaoe\" data-start=\"1984\" data-end=\"2050\"\u003eNitrite can accumulate with insufficient biological filtration\u003c\/li\u003e\n\n\u003cli data-section-id=\"1ge9yfl\" data-start=\"2051\" data-end=\"2112\"\u003eSimple and safe testing method for regular use\u003c\/li\u003e\n\n\u003cli data-section-id=\"8tspj5\" data-start=\"2113\" data-end=\"2166\"\u003eContents are sufficient for approximately \u003cstrong data-start=\"2149\" data-end=\"2164\"\u003e75 tests\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"2h2xdv\" data-start=\"2167\" data-end=\"2257\"\u003eIn case of elevated nitrite levels, targeted action can be taken with appropriate water treatment\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e \u003c\/div\u003e\n\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\n\u003cdiv class=\"text-center\"\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/section\u003e\n\u003cdiv class=\"contents\"\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"pointer-events-none -mt-px h-px translate-y-[calc(var(--scroll-root-safe-area-inset-bottom)-14*var(--spacing))]\" aria-hidden=\"true\"\u003e \u003c\/div\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525812920700,"sku":"04410","price":12.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/sera-no2-test.webp?v=1790860698"},{"product_id":"sera-fosfaat-test-po4","title":"Phosphate Test (PO4) - Sera","description":"\u003cp data-start=\"736\" data-end=\"1105\"\u003eWith the \u003cstrong data-start=\"743\" data-end=\"768\"\u003eSera Phosphate Test PO4\u003c\/strong\u003e, you can quickly and easily measure the current \u003cstrong data-start=\"807\" data-end=\"825\"\u003ephosphate level\u003c\/strong\u003e in aquarium water. Phosphate is produced by fish waste, uneaten food, and natural decomposition processes in the aquarium, among other things. In limited amounts, phosphate can serve as a nutrient for plants, but an excess provides an important nutrient source for unwanted algae.\u003c\/p\u003e\n\u003cp data-start=\"1107\" data-end=\"1495\"\u003eBy regularly checking the PO4 level, you can better monitor water quality and take preventive action against algae growth. According to MaJa Koi, excess phosphate can be removed with suitable phosphate-reducing products, such as variants for freshwater, brackish water, saltwater, or ponds. The contents are sufficient for approximately \u003cstrong data-start=\"1441\" data-end=\"1456\"\u003e60 tests\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1497\" data-end=\"1519\"\u003eKey points\u003c\/h3\u003e\n\u003cul data-start=\"1521\" data-end=\"2129\"\u003e\n\n\u003cli data-section-id=\"1ayvqtf\" data-start=\"1521\" data-end=\"1569\"\u003eMeasures the \u003cstrong data-start=\"1532\" data-end=\"1550\"\u003ephosphate level\u003c\/strong\u003e in aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"h3d03k\" data-start=\"1570\" data-end=\"1626\"\u003eHelps detect elevated \u003cstrong data-start=\"1588\" data-end=\"1603\"\u003ePO4 levels\u003c\/strong\u003e early\u003c\/li\u003e\n\n\u003cli data-section-id=\"1ph8occ\" data-start=\"1627\" data-end=\"1689\"\u003eImportant for preventing \u003cstrong data-start=\"1662\" data-end=\"1687\"\u003eunwanted algae growth\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"mimx1r\" data-start=\"1690\" data-end=\"1748\"\u003ePhosphate can be produced by fish waste and feeding\u003c\/li\u003e\n\n\u003cli data-section-id=\"ne41ve\" data-start=\"1749\" data-end=\"1807\"\u003eSupports better control over \u003cstrong data-start=\"1787\" data-end=\"1805\"\u003ewater quality\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"df79ik\" data-start=\"1808\" data-end=\"1854\"\u003eSuitable for regular aquarium maintenance\u003c\/li\u003e\n\n\u003cli data-section-id=\"6i5iqo\" data-start=\"1855\" data-end=\"1912\"\u003ePractical for aquariums with recurring algae problems\u003c\/li\u003e\n\n\u003cli data-section-id=\"912nvn\" data-start=\"1913\" data-end=\"2004\"\u003eExcess phosphate can be targeted for removal with a suitable phosphate-reducing product\u003c\/li\u003e\n\n\u003cli data-section-id=\"zvflb9\" data-start=\"2005\" data-end=\"2058\"\u003eContents are sufficient for approximately \u003cstrong data-start=\"2041\" data-end=\"2056\"\u003e60 tests\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"njhy11\" data-start=\"2059\" data-end=\"2129\"\u003eIdeal for better management of the biological balance in the aquarium\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525813150076,"sku":"04930","price":16.69,"currency_code":"EUR","in_stock":true}]},{"product_id":"sera-silicaat-test-sio3","title":"Silicate Test (SiO3) - Sera","description":"\u003cdiv class=\"flex-1 overflow-hidden\"\u003e\n\n\u003cdiv class=\"react-scroll-to-bottom--css-xrrbs-79elbk h-full\"\u003e\n\n\u003cdiv class=\"react-scroll-to-bottom--css-xrrbs-1n7m0yu\"\u003e\n\n\u003cdiv class=\"flex flex-col pb-9 text-sm\"\u003e\n\n\u003cdiv class=\"w-full text-token-text-primary\" data-testid=\"conversation-turn-21\"\u003e\n\n\u003cdiv class=\"px-4 py-2 justify-center text-base md:gap-6 m-auto\"\u003e\n\n\u003cdiv class=\"flex flex-1 text-base mx-auto gap-3 md:px-5 lg:px-5 xl:px-5 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem] } group final-completion\"\u003e\n\n\u003cdiv class=\"relative flex w-full flex-col lg:w-[calc(100%-115px)] agent-turn\"\u003e\n\n\u003cdiv class=\"flex-col gap-1 md:gap-3\"\u003e\n\n\u003cdiv class=\"flex flex-grow flex-col max-w-full\"\u003e\n\n\u003cdiv class=\"min-h-[20px] text-message flex flex-col items-start gap-3 whitespace-pre-wrap break-words [.text-message+\u0026amp;]:mt-5 overflow-x-auto\" data-message-author-role=\"assistant\" data-message-id=\"317b2fcc-b9db-4899-a95d-44873a0f713c\"\u003e\n\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\n\n\u003cp data-start=\"750\" data-end=\"1110\"\u003eWith the \u003cstrong data-start=\"757\" data-end=\"784\"\u003eSera Silicate Test SiO3\u003c\/strong\u003e, you can easily measure the \u003cstrong data-start=\"807\" data-end=\"826\"\u003esilicate level\u003c\/strong\u003e in aquarium water. Silicate can stimulate the growth of \u003cstrong data-start=\"871\" data-end=\"886\"\u003ediatoms\u003c\/strong\u003e, which often results in brown deposits on glass, plants, decorations, and the substrate. By monitoring the silicate level, you can quickly identify the cause of this algae growth and take targeted action.\u003c\/p\u003e\n\n\u003cp data-start=\"1112\" data-end=\"1488\"\u003eThis test is suitable for both \u003cstrong data-start=\"1145\" data-end=\"1179\"\u003efreshwater and saltwater aquariums\u003c\/strong\u003e and helps you monitor water quality professionally. MaJa Koi states that a silicate level above \u003cstrong data-start=\"1292\" data-end=\"1302\"\u003e1 mg\/l\u003c\/strong\u003e should be reduced using a suitable silicate binder, such as \u003cstrong data-start=\"1372\" data-end=\"1401\"\u003esera marin silicate clear\u003c\/strong\u003e. The test measures silicate levels above \u003cstrong data-start=\"1439\" data-end=\"1449\"\u003e1 mg\/l\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1490\" data-end=\"1512\"\u003eKey points\u003c\/h3\u003e\n\n\u003cul data-start=\"1514\" data-end=\"2101\"\u003e\n\n\u003cli data-section-id=\"105y94z\" data-start=\"1514\" data-end=\"1563\"\u003eMeasures the \u003cstrong data-start=\"1525\" data-end=\"1544\"\u003esilicate level\u003c\/strong\u003e in aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"1r09kme\" data-start=\"1564\" data-end=\"1615\"\u003eSuitable for \u003cstrong data-start=\"1580\" data-end=\"1613\"\u003efreshwater and saltwater aquariums\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"130i045\" data-start=\"1616\" data-end=\"1671\"\u003eHelps identify the cause of \u003cstrong data-start=\"1639\" data-end=\"1654\"\u003ediatoms\u003c\/strong\u003e\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"ui70t4\" data-start=\"1672\" data-end=\"1743\"\u003ePractical for brown deposits on glass, plants, substrate, or decorations\u003c\/li\u003e\n\n\u003cli data-section-id=\"1uwdil4\" data-start=\"1744\" data-end=\"1794\"\u003eSupports a targeted approach to algae problems\u003c\/li\u003e\n\n\u003cli data-section-id=\"pdtmct\" data-start=\"1795\" data-end=\"1850\"\u003eImportant when setting up a new aquarium\u003c\/li\u003e\n\n\u003cli data-section-id=\"1hxro1g\" data-start=\"1851\" data-end=\"1893\"\u003eMeasures silicate levels above \u003cstrong data-start=\"1881\" data-end=\"1891\"\u003e1 mg\/l\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1muh643\" data-start=\"1894\" data-end=\"1977\"\u003eFor levels above \u003cstrong data-start=\"1914\" data-end=\"1924\"\u003e1 mg\/l\u003c\/strong\u003e, treatment with a silicate binder is recommended\u003c\/li\u003e\n\n\u003cli data-section-id=\"1nk2hgm\" data-start=\"1978\" data-end=\"2045\"\u003eSimple test for regular water quality monitoring\u003c\/li\u003e\n\n\u003cli data-section-id=\"1ls5y46\" data-start=\"2046\" data-end=\"2101\"\u003eIdeal as part of preventive aquarium maintenance\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525822980476,"sku":"04942","price":18.69,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/sera-sio3-test.webp?v=1790860819"},{"product_id":"sera-ijzer-test-fe","title":"Iron Test (Fe) - Serum","description":"\u003cp data-start=\"725\" data-end=\"1122\"\u003eWith the \u003cstrong data-start=\"732\" data-end=\"754\"\u003eSera IJzer Test Fe\u003c\/strong\u003e, you can easily check the \u003cstrong data-start=\"783\" data-end=\"816\"\u003eiron content in aquarium water\u003c\/strong\u003e. Iron is an important nutrient for aquarium plants and plays a major role in healthy, vigorous plant growth. When plants develop pale leaves or look less vibrant, this may indicate an iron deficiency. This test quickly provides insight into the Fe level, allowing you to make targeted adjustments.\u003c\/p\u003e\n\u003cp data-start=\"1124\" data-end=\"1560\"\u003eThe test is suitable for aquariums in which plants play an important role and helps to better tailor fertilization to the current water parameters. According to MaJa Koi, a deficiency can be specifically addressed with plant nutrients such as \u003cstrong data-start=\"1351\" data-end=\"1367\"\u003esera florena\u003c\/strong\u003e or \u003cstrong data-start=\"1371\" data-end=\"1390\"\u003esera florenette\u003c\/strong\u003e. \u003cstrong data-start=\"1396\" data-end=\"1434\"\u003eChelated, stabilized iron\u003c\/strong\u003e can also be measured with this test. The contents are sufficient for approximately \u003cstrong data-start=\"1506\" data-end=\"1521\"\u003e75 tests\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1562\" data-end=\"1584\"\u003eKey points\u003c\/h3\u003e\n\u003cul data-start=\"1586\" data-end=\"2111\"\u003e\n\n\u003cli data-section-id=\"109zbdx\" data-start=\"1586\" data-end=\"1632\"\u003eMeasures the \u003cstrong data-start=\"1597\" data-end=\"1613\"\u003eiron content\u003c\/strong\u003e in aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"1misq0c\" data-start=\"1633\" data-end=\"1698\"\u003eHelps to identify \u003cstrong data-start=\"1641\" data-end=\"1676\"\u003eiron deficiency in aquarium plants\u003c\/strong\u003e early\u003c\/li\u003e\n\n\u003cli data-section-id=\"hn4skw\" data-start=\"1699\" data-end=\"1752\"\u003eImportant for healthy and vigorous plant growth\u003c\/li\u003e\n\n\u003cli data-section-id=\"1n8lw6\" data-start=\"1753\" data-end=\"1806\"\u003ePractical for plants with \u003cstrong data-start=\"1781\" data-end=\"1804\"\u003epale leaves\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"11a6e68\" data-start=\"1807\" data-end=\"1856\"\u003eSuitable for more targeted fertilization\u003c\/li\u003e\n\n\u003cli data-section-id=\"1d3thdj\" data-start=\"1857\" data-end=\"1909\"\u003eAlso measures \u003cstrong data-start=\"1868\" data-end=\"1907\"\u003echelated \/ stabilized iron\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1a364kr\" data-start=\"1910\" data-end=\"1956\"\u003eIdeal for planted aquariums and aquascapes\u003c\/li\u003e\n\n\u003cli data-section-id=\"1uh0e50\" data-start=\"1957\" data-end=\"2015\"\u003eSupports better control over water quality\u003c\/li\u003e\n\n\u003cli data-section-id=\"ikgnrv\" data-start=\"2016\" data-end=\"2069\"\u003eSimple test for regular aquarium maintenance\u003c\/li\u003e\n\n\u003cli data-section-id=\"1uwcwcq\" data-start=\"2070\" data-end=\"2111\"\u003eSufficient for approximately \u003cstrong data-start=\"2096\" data-end=\"2111\"\u003e75 tests\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525823078780,"sku":"04610","price":16.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/sera-fe-test.webp?v=1790860829"},{"product_id":"sera-koper-test-cu","title":"Copper Test (Cu) - Sera","description":"\u003cdiv class=\"flex-1 overflow-hidden\"\u003e\n\n\u003cdiv class=\"react-scroll-to-bottom--css-xrrbs-79elbk h-full\"\u003e\n\n\u003cdiv class=\"react-scroll-to-bottom--css-xrrbs-1n7m0yu\"\u003e\n\n\u003cdiv class=\"flex flex-col pb-9 text-sm\"\u003e\n\n\u003cdiv class=\"w-full text-token-text-primary\" data-testid=\"conversation-turn-25\"\u003e\n\n\u003cdiv class=\"px-4 py-2 justify-center text-base md:gap-6 m-auto\"\u003e\n\n\u003cdiv class=\"flex flex-1 text-base mx-auto gap-3 md:px-5 lg:px-5 lg:px-1 xl:px-5 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem] } group final-completion\"\u003e\n\n\u003cdiv class=\"relative flex w-full flex-col lg:w-[calc(100%-115px)] agent-turn\"\u003e\n\n\u003cdiv class=\"flex-col gap-1 md:gap-3\"\u003e\n\n\u003cdiv class=\"flex flex-grow flex-col max-w-full\"\u003e\n\n\u003cdiv class=\"min-h-[20px] text-message flex flex-col items-start gap-3 whitespace-pre-wrap break-words [.text-message+\u0026amp;]:mt-5 overflow-x-auto\" data-message-author-role=\"assistant\" data-message-id=\"228e3bb3-ecdc-4d3b-a370-cb96f5f1a8a3\"\u003e\n\n\u003cdiv class=\"markdown prose w-full break-words dark:prose-invert light\"\u003e\n\n\u003cp data-start=\"704\" data-end=\"1061\"\u003eWith the \u003cstrong data-start=\"711\" data-end=\"733\"\u003eSera Copper Test Cu\u003c\/strong\u003e, you can quickly and accurately check the \u003cstrong data-start=\"771\" data-end=\"804\"\u003ecopper content in aquarium water\u003c\/strong\u003e. Copper can be harmful to fish and is particularly risky for invertebrates such as shrimp, crayfish, and snails. By testing regularly, you can immediately see whether the water level is safe and take timely action if the copper content is too high.\u003c\/p\u003e\n\n\u003cp data-start=\"1063\" data-end=\"1404\"\u003eThis test is particularly valuable after using certain medications or algaecides, or if you have doubts about the quality of tap water. According to MaJa Koi, the contents are sufficient for approximately \u003cstrong data-start=\"1267\" data-end=\"1282\"\u003e50 tests\u003c\/strong\u003e and \u003cstrong data-start=\"1320\" data-end=\"1336\"\u003esera aquatan\u003c\/strong\u003e can be used as a solution in case of elevated copper levels.\u003c\/p\u003e\n\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1406\" data-end=\"1428\"\u003eKey points\u003c\/h3\u003e\n\n\u003cul data-start=\"1430\" data-end=\"2015\"\u003e\n\n\u003cli data-section-id=\"1r5jmko\" data-start=\"1430\" data-end=\"1476\"\u003eMeasures the \u003cstrong data-start=\"1441\" data-end=\"1457\"\u003ecopper content\u003c\/strong\u003e in aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"9u735y\" data-start=\"1477\" data-end=\"1546\"\u003eSuitable for checking whether fish and invertebrates are safe\u003c\/li\u003e\n\n\u003cli data-section-id=\"1pan9y1\" data-start=\"1547\" data-end=\"1612\"\u003eImportant for aquariums with \u003cstrong data-start=\"1577\" data-end=\"1610\"\u003eshrimp, crayfish, and snails\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"o6n9d1\" data-start=\"1613\" data-end=\"1666\"\u003eHelps detect elevated copper levels in time\u003c\/li\u003e\n\n\u003cli data-section-id=\"r9ptem\" data-start=\"1667\" data-end=\"1735\"\u003ePractical after using medications or algaecides\u003c\/li\u003e\n\n\u003cli data-section-id=\"1lnxt8k\" data-start=\"1736\" data-end=\"1782\"\u003eAlso suitable for checking tap water\u003c\/li\u003e\n\n\u003cli data-section-id=\"16eazj7\" data-start=\"1783\" data-end=\"1834\"\u003eSimple test for regular aquarium maintenance\u003c\/li\u003e\n\n\u003cli data-section-id=\"cp1loa\" data-start=\"1835\" data-end=\"1892\"\u003eContributes to safe and stable water quality\u003c\/li\u003e\n\n\u003cli data-section-id=\"1ui33sd\" data-start=\"1893\" data-end=\"1936\"\u003eSufficient for approximately \u003cstrong data-start=\"1919\" data-end=\"1934\"\u003e50 tests\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1us1aa0\" data-start=\"1937\" data-end=\"2015\"\u003eIn case of elevated copper levels, a suitable water conditioner can be used\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525823603068,"sku":"04710","price":16.89,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/sera-cu-test.webp?v=1790860837"},{"product_id":"sera-chloor-test-cl","title":"Chlorine Test (Cl) - Sera","description":"\u003cp data-start=\"733\" data-end=\"1086\"\u003eWith the \u003cstrong data-start=\"740\" data-end=\"763\"\u003esera Chlorine Test Cl\u003c\/strong\u003e, you can easily check the \u003cstrong data-start=\"792\" data-end=\"826\"\u003echlorine level in aquarium water\u003c\/strong\u003e. Chlorine can enter the aquarium through tap water and is harmful to fish, plants, and beneficial bacteria. By testing the water regularly, you can quickly determine whether the aquarium water is safe and take targeted action when the chlorine level is too high.\u003c\/p\u003e\n\u003cp data-start=\"1088\" data-end=\"1537\"\u003eThis test is particularly useful when changing water, setting up a new aquarium, or when you want to check tap water before it comes into contact with fish. According to MaJa Koi, the contents are sufficient for approximately \u003cstrong data-start=\"1326\" data-end=\"1341\"\u003e45 tests\u003c\/strong\u003e. Chlorine in freshwater can be addressed immediately using suitable water conditioners such as \u003cstrong data-start=\"1436\" data-end=\"1452\"\u003esera toxivec\u003c\/strong\u003e or products that make tap water safe for fish.\u003c\/p\u003e\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1539\" data-end=\"1561\"\u003eKey points\u003c\/h3\u003e\n\u003cul data-start=\"1563\" data-end=\"2172\"\u003e\n\n\u003cli data-section-id=\"1guxcce\" data-start=\"1563\" data-end=\"1610\"\u003eMeasures the \u003cstrong data-start=\"1574\" data-end=\"1591\"\u003echlorine level\u003c\/strong\u003e in aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"1conxpc\" data-start=\"1611\" data-end=\"1673\"\u003eSuitable for testing \u003cstrong data-start=\"1640\" data-end=\"1671\"\u003etap water and aquarium water\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1r6yn3x\" data-start=\"1674\" data-end=\"1729\"\u003eHelps identify harmful chlorine levels early\u003c\/li\u003e\n\n\u003cli data-section-id=\"1h6znb4\" data-start=\"1730\" data-end=\"1798\"\u003eImportant for water changes and setting up an aquarium\u003c\/li\u003e\n\n\u003cli data-section-id=\"1gtaoss\" data-start=\"1799\" data-end=\"1873\"\u003eSupports a safe environment for fish, plants, and bacteria\u003c\/li\u003e\n\n\u003cli data-section-id=\"1sczpq3\" data-start=\"1874\" data-end=\"1929\"\u003eEasy to use for regular water testing\u003c\/li\u003e\n\n\u003cli data-section-id=\"1n8keq1\" data-start=\"1930\" data-end=\"1973\"\u003eSufficient for approximately \u003cstrong data-start=\"1956\" data-end=\"1971\"\u003e45 tests\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"73skqg\" data-start=\"1974\" data-end=\"2034\"\u003eIdeal as part of professional aquarium maintenance\u003c\/li\u003e\n\n\u003cli data-section-id=\"27gwkl\" data-start=\"2035\" data-end=\"2096\"\u003eQuickly determines whether water needs to be treated first\u003c\/li\u003e\n\n\u003cli data-section-id=\"eeewic\" data-start=\"2097\" data-end=\"2172\"\u003eCan be combined with suitable water conditioners when chlorine levels are elevated\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525825536380,"sku":"04810","price":11.69,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/sera-cl-test.webp?v=1790860847"},{"product_id":"sera-zuurstof-test-o2","title":"Oxygen Test (O2) - Sera","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-5\" data-is-intersecting=\"true\"\u003e\n\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-5\" data-turn-id-container=\"request-WEB:af24b341-ede9-425b-9684-db997e3bf50e-5\" data-testid=\"conversation-turn-12\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"d946188b-764f-43ca-8ba9-50af2543cfdb\" data-turn-start-message=\"true\" data-message-model-slug=\"gpt-5-5-thinking\"\u003e\n\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\n\u003cp data-start=\"729\" data-end=\"1188\"\u003eWith the \u003cstrong data-start=\"736\" data-end=\"761\"\u003esera Oxygen Test O2\u003c\/strong\u003e, you can quickly and easily check the oxygen level of your aquarium water. Sufficient oxygen is essential for active fish, stable water quality, and properly functioning biological processes in the aquarium. When fish breathe rapidly or hang around the water surface, this may indicate an oxygen deficiency. With this test, you can get clarity within a few minutes and take timely action.\u003c\/p\u003e\n\n\u003cp data-start=\"1190\" data-end=\"1629\"\u003eThis test is a practical choice for any aquarium enthusiast who wants to monitor their water quality professionally. By regularly checking the oxygen level, you prevent risks to fish and maintain better control over the biological balance. MaJa Koi indicates that a rapid increase in the oxygen level is possible with \u003cstrong data-start=\"1527\" data-end=\"1542\"\u003esera O2plus\u003c\/strong\u003e when the test shows that intervention is necessary.\u003c\/p\u003e\n\n\u003ch3 data-section-id=\"157zcj2\" data-start=\"1631\" data-end=\"1653\"\u003eKey points\u003c\/h3\u003e\n\n\u003cul data-start=\"1655\" data-end=\"2300\"\u003e\n\n\u003cli data-section-id=\"2ibd4j\" data-start=\"1655\" data-end=\"1705\"\u003eMeasures the \u003cstrong data-start=\"1666\" data-end=\"1685\"\u003eoxygen level\u003c\/strong\u003e of aquarium water\u003c\/li\u003e\n\n\u003cli data-section-id=\"1w0k2x4\" data-start=\"1706\" data-end=\"1761\"\u003eProvides insight into the O2 value within a few minutes\u003c\/li\u003e\n\n\u003cli data-section-id=\"1iz4b6n\" data-start=\"1762\" data-end=\"1816\"\u003eHelps to detect \u003cstrong data-start=\"1770\" data-end=\"1788\"\u003eoxygen deficiency\u003c\/strong\u003e early\u003c\/li\u003e\n\n\u003cli data-section-id=\"vsoxfa\" data-start=\"1817\" data-end=\"1891\"\u003eImportant for fish that breathe rapidly or hang at the water surface\u003c\/li\u003e\n\n\u003cli data-section-id=\"797ui5\" data-start=\"1892\" data-end=\"1944\"\u003eSupports a healthy living environment for fish\u003c\/li\u003e\n\n\u003cli data-section-id=\"usyekv\" data-start=\"1945\" data-end=\"2006\"\u003eContributes to better control over the \u003cstrong data-start=\"1986\" data-end=\"2004\"\u003ewater quality\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"1nsdvqe\" data-start=\"2007\" data-end=\"2058\"\u003ePractical test for regular aquarium maintenance\u003c\/li\u003e\n\n\u003cli data-section-id=\"pwkh1t\" data-start=\"2059\" data-end=\"2119\"\u003eSuitable for quickly determining if extra aeration is needed\u003c\/li\u003e\n\n\u003cli data-section-id=\"1ejhwrz\" data-start=\"2120\" data-end=\"2196\"\u003eCan be used as a preventive check during warm weather or high fish stocking\u003c\/li\u003e\n\n\u003cli data-section-id=\"781cil\" data-start=\"2197\" data-end=\"2300\"\u003eAt low oxygen levels, the oxygen content can be quickly increased with a suitable oxygen product\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e \u003c\/div\u003e\n\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\n\u003cdiv class=\"text-center\"\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/section\u003e\n\u003cdiv class=\"contents\"\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv class=\"pointer-events-none -mt-px h-px translate-y-[calc(var(--scroll-root-safe-area-inset-bottom)-14*var(--spacing))]\" aria-hidden=\"true\"\u003e \u003c\/div\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525825929596,"sku":"04914","price":16.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/sera-o2-test.webp?v=1790860857"},{"product_id":"sera-aqua-test-box-marin-ca","title":"Sera aqua-test box marine (+ Ca)","description":"\u003cp\u003eAn experienced saltwater aquarium enthusiast regularly checks the water in their aquarium. Only in this way can a problem be addressed before it becomes dangerous for the sensitive animals.\u003c\/p\u003e\n\u003cp\u003eThe sera aqua-test box marin contains the following tests:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003epH value\u003c\/li\u003e\n\n\u003cli\u003ecarbonate hardness\u003c\/li\u003e\n\n\u003cli\u003eammonium\/ammonia\u003c\/li\u003e\n\n\u003cli\u003enitrite\u003c\/li\u003e\n\n\u003cli\u003enitrate\u003c\/li\u003e\n\n\u003cli\u003ephosphate\u003c\/li\u003e\n\n\u003cli\u003ecopper\u003c\/li\u003e\n\n\u003cli\u003ecalcium\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525869871484,"sku":"04004","price":89.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/csm-8953-04004-int-sera-aqua-test-box-marin-367044.png?v=1790861412"},{"product_id":"sera-calcium-test-ca","title":"Serum calcium test (Ca)","description":"\u003cp\u003eThis test determines the calcium content extremely accurately in increments of 20 mg\/l\u003c\/p\u003e\n\u003cp\u003eFor approx. 7,500 mg of calcium. If the Ca level is too low, add sera marin COMPONENT 1 Ca. If levels are elevated, it helps to replace part of the water.\u003c\/p\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525870002556,"sku":"04920","price":13.25,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/csm-8996-04920-de-fr-nl-it-es-pt-tr-si-hr-sera-ca.png?v=1790861421"},{"product_id":"sera-magnesium-test-mg","title":"Serum magnesium test (mg)","description":"\u003cp\u003eFor a simple and reliable check of the magnesium level in the saltwater aquarium\u003c\/p\u003e\n\u003cp\u003eThe magnesium level can be increased with sera marin COMPONENT 6 magnesium. The range depends on the calcium level of the water being tested.\u003c\/p\u003e","brand":"Sera","offers":[{"title":"Default","offer_id":57525870330236,"sku":"04714","price":30.5,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/csm-8984-04714-de-fr-nl-it-es-pt-tr-si-hr-sera-mg.png?v=1790861431"},{"product_id":"aqua-quicktest-6-50strips-colombo","title":"Aqua quicktest 6 (50 strips) - Colombo","description":"\u003cp\u003eWith the Aqua Quicktest 6 by Colombo, you can quickly and easily measure the most important water parameters in your aquarium. These handy test strips offer a fast and reliable method to check six essential water parameters, including pH, KH, GH, nitrite, nitrate, and ammonia.\u003c\/p\u003e\n\u003cp\u003eThanks to the user-friendly design of the test strips, you can perform accurate measurements within a few seconds. Simply dip the strip in your aquarium water, wait a few seconds, and then compare the colors of the test fields with the included color chart. This gives you an immediate, clear picture of the water quality in your aquarium.\u003c\/p\u003e\n\u003cp\u003eThe Aqua Quicktest 6 strips are packaged in convenient bottles of 50 strips, providing you with a sufficient supply for multiple testing sessions. This makes them ideal for both regular use and occasional checks. Furthermore, the test strips are suitable for both freshwater and saltwater aquariums.\u003c\/p\u003e","brand":"Colombo","offers":[{"title":"Default","offer_id":57526407692668,"sku":"A5020290","price":16.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/6659\/1356\/files\/93d816c5144055607a5bdf7383a2b505280c3dff.webp?v=1790864372"},{"product_id":"marine-iron-test-colour-3-colombo","title":"Marine Iron test (colour 3) - Colombo","description":"\u003cp\u003eThe Marine Iron Test (Colour 3) from Colombo is a simple and accurate way to measure the iron content in your saltwater aquarium. The correct level of iron is crucial for the health of your aquarium plants and the maintenance of water quality. 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