GH, pH & KH

W’eau pH plus powder - 5 kg is a product designed to increase the pH level of pool water, so that it falls within the correct range for safe and comfortable swimming. Here are the main features and directions for use for W’eau pH plus powder:

**Why is the pH level important?** The pH level of pool water is a crucial factor in maintaining water quality. A good pH level is usually between 7.2 and 7.6. Maintaining the correct pH level is essential to prevent the water from becoming too acidic or too alkaline, which can irritate the eyes and skin and affect the effectiveness of disinfectants.

**Directions for use:**
1. Always start by measuring the current pH level of the pool water with a pH test kit.
2. Read the recommended amount on the packaging of W’eau pH plus powder required to adjust the pH level. Add the correct amount of powder to a bucket of warm water or pool water.
3. Mix the powder thoroughly until it is completely dissolved.
4. Pour the solution evenly over the pool surface.
5. Allow the water to circulate well to ensure that the product is evenly distributed.

**Important note:** Never use W’eau pH plus powder at the same time as other chemicals, such as chlorine. Always add the powder to the water and never the other way around.

**Safety instructions:**
- Always store the pH plus powder in a safe, dry and cool place, out of reach of children and pets.
- Always read the safety instructions on the packaging before using the product.

When you use W’eau pH plus powder as prescribed, you can adjust the pH level of your pool water to ensure that it is within the correct range for a comfortable swimming experience.

sera pH/KH-minus

Some fish species, such as discus and scalare fish, thrive best in very soft water, especially for breeding purposes. However, when keeping other fish species, the water may have too high a carbonate hardness (KH), or the pH level may have risen too sharply due to natural metabolic processes.

In such cases, sera pH/KH-minus offers a reliable and fast solution. The pH and KH levels are lowered and regulated quickly and accurately. This creates conditions that are suitable for the specific needs of the fish and contribute to their well-being.

Tip: For the permanent maintenance of tropical soft water conditions, set the KH to 4 dKH with sera pH/KH-minus and then place sera super peat in the filter.

Technical specifications:

• 100 ml: suitable for 400 liters of water
• 250 ml: suitable for 1000 liters of water
• 500 ml: suitable for 2000 liters of water
• 2500 ml: suitable for 10000 liters of water
• 5000 ml: suitable for 20000 liters of water

W'eau TA+ is a product that increases the total alkalinity of pool water. Maintaining the correct alkalinity is essential to keep the pH level of the pool water stable. Here are the main features and directions for use for W'eau TA+:

**Why is alkalinity important?** The correct alkalinity in pool water helps keep the pH level stable, even during unexpected weather changes or the use of other chemicals. This contributes to the water quality in the pool.

**Directions for use:**
1. Always start by measuring the total alkalinity (TA) of the pool water using a pool water testing kit. An ideal TA level is usually between 100 and 150 ppm (parts per million).
2. Add the correct amount of W'eau TA+ powder to a bucket of warm water or pool water according to the instructions on the packaging. The required weight may vary depending on the desired adjustment of the TA level. Generally, you can use the following rule: 150 grams of TA+ powder per 10 m³ increases or decreases the TA level by approximately 10 ppm.
3. Make sure the powder is completely dissolved in the water before spreading it evenly over the pool.

**Important note:** Never add more than 300 grams of W'eau TA+ powder per 10 m³ of pool water during a single treatment.

**Safety instructions:**
- Never use TA+ powder at the same time as other chemicals, such as chlorine. Always add the powder to the water and not the other way around.
- Always store the TA+ powder in a safe, dry, and cool place, out of reach of children and pets.
- Always rinse an empty package thoroughly with pool water before throwing it away.

**Features of W'eau TA+:**
- Approved for use in swimming pools.
- Available in different package sizes, including 1 kg and 3 kg.

By using W'eau TA+, you can adjust the total alkalinity of your pool water to maintain the water quality and keep the pH level stable. The proper use of this product contributes to an optimal swimming experience in your pool.

The CTX-15 pH Minus liquid 20 liters was developed for lowering the pH level of pool water. A correct pH level is important for comfortable swimming water and the optimal performance of other water treatment products.

When the pH level is too high, this can lead to, among other things, limescale deposits, cloudy water, and reduced effectiveness of disinfectants. With CTX-15, the pH level can be controlled and lowered.

Suitable for automatic dosing

Thanks to its liquid composition, CTX-15 is particularly suitable for use in combination with automatic pH dosing systems. The dosing system measures the water parameters and can add the product to the pool water as needed.

For a good water balance, a pH level of approximately 7.2 to 7.6 is generally maintained in swimming pools. Check the pH level regularly and adjust the dosage accordingly.

Large 20-liter package

The 20-liter package is especially practical for larger swimming pools and situations where an automatic dosing system regularly uses pH reducer.

Main features

• Liquid pH reducer for pool water
• Lowers an excessively high pH level
• Contents: 20 liters
• Suitable for automatic dosing systems
• Supports a good water balance
• Helps prevent limescale deposits caused by an excessively high pH
• Suitable for private and professional pool maintenance
• Easy to dose with a suitable dosing system

Note: always use pool chemicals according to the instructions on the label. Never mix the product directly with other chemicals.

The CTX-25 Liquid pH Plus 20L is a liquid product for increasing a too low pH level in pool water. CTX recommends the product when the pH level is lower than 7.2, with the aim of bringing the pH within the recommended range of 7.2 to 7.6.

A correct pH level is important for the proper operation of the water treatment. According to CTX, a correct pH helps, among other things, to optimize the effectiveness of disinfectants and to limit problems caused by a too low pH, such as the corrosion of metal parts.

Ideal for automatic dosing

The liquid composition makes CTX-25 particularly suitable for use with an automatic pH control and dosing pump. CTX explicitly calls automatic dosing pumps the ideal application for this product. This allows the pH correction to become part of an automatically controlled water treatment system.

For a pH between 7.2 and 7.6

CTX recommends a pH level between 7.2 and 7.6 for pool water and advises checking this value regularly. When the pH falls below 7.2, Liquid pH Plus can be used to increase it again.

For automatic dosing, the product must be used according to the instructions of the dosing system. CTX also provides dosing guidelines for manual application, but because the required amount depends on the current water values and conditions, we always advise following the instructions on the current packaging.

Important points

• Liquid pH increaser for pool water
• For correcting a pH level below 7.2
• Recommended pH range: 7.2 to 7.6
• Ideal for automatic dosing pumps
• Suitable for automatic pH control
• Helps optimize the effectiveness of disinfectants
• Helps prevent problems caused by a too low pH
• Large package of 20 liters
• Suitable for pool water treatment
• Regularly check the current pH level

W’eau TA- Alkalinity 1kg is a water treatment product for lowering the total alkalinity in swimming pool water. Total alkalinity, also known as the TA value, affects the stability of the pH level. When alkalinity is too high, the pH can be more difficult to correct and the pool water can become unbalanced.

By lowering the alkalinity in a targeted manner, it becomes easier to keep the pH level stable and controllable. A good water balance contributes to clear pool water, greater swimming comfort, and the improved effectiveness of other water treatment products. W’eau TA- is therefore a practical product for pool owners who want to precisely adjust their water levels.

Always first check the current water levels with a suitable test kit or digital meter. Dose the product according to the instructions on the packaging and only add it when no swimmers are present. Measure again after treatment to check whether the alkalinity and pH level are back within the desired range.

Important points

• Lowers the total alkalinity of pool water
• Helps keep the pH level more stable
• Suitable for correcting a TA value that is too high
• Supports a good water balance
• Makes pH corrections easier to manage
• Contributes to clear and comfortable pool water
• Supports the effectiveness of other water treatment products
• Suitable for regular pool maintenance
• Use after measuring the water levels
• Dose according to the instructions on the packaging
• Only use when no swimmers are present
• Recheck the water levels after use
• Practical for manual water treatment
• Contents: 1 kg

Melpool 55/G Granules 1 kg is a fast-dissolving chlorine granule product for treating and disinfecting pool water. The product is suitable for targeted increases in chlorine levels and helps keep the water clean, clear, and hygienic.

These granules are practical for regular pool maintenance, but also when chlorine levels need to be adjusted quickly. Think of situations after intensive use, warm weather, or when the water quality needs extra support. Thanks to its fast action, Melpool 55/G Granules is a reliable choice for effective water disinfection.

For optimal results, it is important to regularly check the water parameters and apply the product according to the dosage instructions on the packaging. Always use chlorine products carefully and only add them when no swimmers are present.

Key points

• Fast-dissolving chlorine granules
• For increasing chlorine levels
• Supports effective disinfection of pool water
• Helps keep pool water clean and clear
• Suitable for regular pool maintenance
• Practical for intensive use or warm weather
• Quickly applicable when chlorine levels need to be adjusted
• Ideal for manual water treatment
• Always check the current water parameters first
• Apply according to the dosage on the packaging
• Only use when no swimmers are present
• Contents: 1 kg

CTX pH Plus 5kg is a pH increaser for pool water and is used when the pH level is lower than 6.8. A correct pH level is important for clear, comfortable, and easy-to-maintain pool water. When the pH is too low, the water can become more aggressive and can cause skin and eye irritation, cloudy water, and disruption of the water balance.

With CTX pH Plus, you increase the pH level in a targeted and controlled manner. The product helps to restore the water balance and supports a better performance of other water treatment products. In addition, a correct pH level contributes to more swimming comfort and prevents problems such as cloudy water, limescale deposits, and irritation.

Use 150 g pH Plus per 10 m³ of water to increase the pH level by approximately 0.2 points. Distribute the product evenly over the water surface when no swimmers are present. Check the pH level again after application and repeat the treatment gradually if necessary.

Important points

• Increases a too low pH level in pool water
• To be used when the pH is lower than 6.8
• Helps to prevent cloudy water
• Contributes to less skin and eye irritation
• Supports a stable water balance
• Helps improve the performance of water treatment products
• Suitable for regular pool maintenance
• Dosage: 150 g per 10 m³ increases the pH by approximately 0.2 points
• Distribute evenly over the water surface
• Only apply in the absence of swimmers
• Check the pH level again after dosing
• Contents: 5 kg

Interline pH-Min Tablets 80 pieces are pH-reducing tablets for pool and spa water. When the pH level is too high, chlorine becomes less effective and the risk of algae growth, limescale deposits and cloudy water increases. With these pH-minus tablets, you can effectively lower the pH level, helping to keep the pool water better balanced.

A good pH level is essential for comfortable and safe pool water. For chlorine products to work optimally, a pH range of 7.2 to 7.6 is recommended. Thanks to their tablet form, the pH-Min tablets are easy to dose and practical to use for regular pool and spa maintenance.

Key points

• Lowers an excessively high pH level in pool water
• Suitable for pool and spa water
• Product form: tablets
• Pack of 80 tablets of 8 grams
• Supports the effective action of chlorine products
• Helps reduce the risk of algae and limescale formation
• The ideal pH level is between 7.2 and 7.6
• Practical for regular water maintenance
• Easier to dose than loose powder
• Suitable as a pH regulator for pool maintenance

CTX Cristal Clear Water 5 liters is an effective water treatment product for swimming pools with cloudy or dull water. The product helps fine suspended particles and dirt particles clump together, making them easier to remove from the pool water through filtration and post-treatment. This makes the water clearer, fresher, and more appealing to swim in.

This product can be used both preventatively and curatively. For cloudy water, use CTX Cristal Clear Water to actively restore clarity. Preventatively, the product can help keep the pool water clear for longer and reduce problems with suspended dirt. Always use the product with the filtration system running and without swimmers in the pool. Allow the dirt to settle and then vacuum it up with the valve in the waste position.

Key points

• Helps make cloudy pool water clear again
• Suitable as a preventative and curative treatment
• Supports the removal of fine suspended particles
• Ideal for dull, milky, or less clear pool water
• Use with the filtration system running
• Apply when no swimmers are in the pool
• After settling, vacuum up with the valve in the waste position
• Dosage for cloudy water: 1 liter per 100 m³
• Preventative dosage: 0.5 liters per 100 m³
• Contents: 5 liters

CTX pH Minus 1.5 kg is a pH-lowering product for pool water and is used when the pH level is too high. A correct pH level is essential for comfortable swimming water, the optimal effectiveness of disinfectants, and the preservation of pool materials. When the pH is too high, the water can become cloudy, limescale deposits can form, and chlorine works less effectively.

With CTX pH Minus, you can precisely lower the pH level back to the desired level. This supports a more stable water balance, helps keep the pool water clear, and ensures that chlorine can perform its disinfecting function more effectively. Regular monitoring of the pH level remains important for safe, clean, and comfortable swimming water.

Key points

• Lowers an excessively high pH level in pool water
• Supports a stable water balance
• Helps prevent limescale deposits
• Reduces the risk of cloudy or milky pool water
• Contributes to the improved effectiveness of chlorine and other disinfectants
• Suitable for regular pool maintenance
• Practical for alkaline or unbalanced pool water
• Supports clear, clean, and comfortable swimming water
• Ideal for private and larger swimming pools
• Packaging of 1.5 kg for targeted pH maintenance

The Spa Line Alkalinity Plus Powder 1 kg is an alkalinity increaser for correcting too low total alkalinity (TA) in spa and hot tub water. Alkalinity acts as a buffer for the pH level. When the TA is properly adjusted, the pH remains stable more easily and the water balance is easier to keep under control.

Increases total alkalinity

When a water test shows that the total alkalinity is too low, Alkalinity Plus can be used to increase this value. Spa Line recommends an alkalinity between 100 and 150 ppm to help keep the pH level stable.

Helps prevent pH fluctuations

Too low alkalinity causes the pH level to fluctuate more easily. By first bringing the alkalinity to the correct level, you create a more stable foundation for the further treatment of the spa water. It is therefore advisable to check the TA value regularly, especially after refreshing the water.

Easy to use in powder form

Before use, the powder is first dissolved in a bucket of water. Then, distribute the solution evenly over the water surface. This way, the product can be well distributed through the spa water.

Dosage

According to the official product information, 150 grams per 10 m³ of water increases the total alkalinity by approximately 10 ppm. A maximum of 300 grams per 10 m³ may be dosed per treatment. Measure the alkalinity before treatment and check the value again before making a possible further correction.

Important points

• Increases too low total alkalinity
• Helps keep the pH level stable
• Reduces strong pH fluctuations
• Specially for spa and hot tub water
• Alkalinity increaser in powder form
• Recommended alkalinity: 100 – 150 ppm
• 150 grams per 10 m³ increases the TA by approximately 10 ppm
• Maximum 300 grams per 10 m³ per treatment
• Dissolve in a bucket of water before use
• Then distribute over the water surface
• Check the water value before and after treatment
• Contents: 1 kg

With SpaBalancer pH- granules 1.5 kg you lower the pH value in your spa or hot tub. A major part of healthy and clear water is the pH value. In case of an elevated pH value in your spa water you use the pH- granules from SpaBalancer which ensures a reduction of the pH and an intensive cleaning after which you can keep the pH value at the correct level. The separately added disinfectants can do their job well at the correct pH value in the water without being inhibited.

Our advice: First get the pH value of your spa water in order, before other disinfectants are added to the spa water.

Features SpaBalancer pH- granules

• lower pH value
• brand: SpaBalancer
• content: 1.5 kg

What is it

SpaBalancer pH-Plus Granules is a pH increaser for spa and hot tub water. The product is used to controlledly correct a pH value that is too low.

What is it used for

For stabilizing the water balance when the pH value is below the recommended level.

What makes this product suitable

The granules are easy to dose and suitable for precise correction. The required amount depends on the water hardness and the measured pH value.

Dosage and use

1. First measure the pH value of the water.

2. Turn on the pumps.

3. Slowly add 1 teaspoon per 1,000 liters of water near the filter.

4. Let the pumps run for 2–3 minutes.

5. Measure the pH value again and determine if further correction is needed.

Important

Never add a large amount of pH-Plus all at once. Overdosing can cause immediate limescale buildup and cloudy water.
If this happens:
• Lower the pH to approximately 6.5
• Wait 1–2 days until the water is clear again

Benefits

• Targeted increase of the pH value
• Easy and controlled dosing
• Suitable for spas and hot tubs
• Supports a stable water balance

Specifications

Type: pH increaser
Form: granules
Application: spa and hot tub water
Dosage: 1 teaspoon per 1,000 liters (correct step by step)

Antikalk 607 for swimming pools 5L - CTX

CTX-607 Antikalk is a liquid water treatment product that disperses and binds lime in the pool water. This effectively prevents limescale deposits in the pool and pipes.

This product is suitable for both the initial treatment when the pool is first put into use and for treatment at the end of the swimming season when the pool is not emptied.

Dosage for initial treatment

1 liter per 10 m³ of water.

Application

Dilute the required amount of CTX-607 in a container of water. Distribute the solution evenly over the entire pool surface while the filtration system is operating.

If the pool is not emptied for the winter, treat the water again at the end of the season using the same dosage.

Powder for increasing the total alkalinity of the water, which stabilizes the pH value.

• Packaging: 1 kg container
• Indoor pool/outdoor pool: indoor/outdoor
• Dosage method: solution
• Form: powder

Instructions

150 g per 10 m³ of water increases the total alkalinity by 10 ppm.
Maintain the TA between 100 and 150 ppm.

Note: Do not dose more than 300 g/10 m³ per treatment.

PH- Powder (1.5 kg) – Melpool

Melpool PH- Powder is an effective pH-lowering agent for spas, hot tubs, and swimming pools. An excessively high pH level can lead to cloudy water, limescale deposits, and reduced effectiveness of chlorine or bromine. This product allows you to adjust the pH level in a controlled manner to the ideal range of 7.2 to 7.6.

Why lowering the pH is important
When the pH level is too high, the disinfecting effect of chlorine decreases significantly, and skin and eye irritation may occur. By adjusting the pH correctly, you improve water quality, enhance bathing comfort, and protect components such as pipes and heating elements.

Suitable for spas and swimming pools
This pH-lowering powder is suitable for indoor and outdoor pools and can be safely used in spas, hot tubs, and swimming pools. The product is dissolved in water and distributed evenly for accurate dosing.

Easy and controlled dosing
By dosing gradually, you maintain complete control over the water balance. Regularly testing the pH level is essential for optimal results.

Directions for use

• Depending on the alkalinity, 40–100 grams per 10 m³ of water lowers the pH level by 0.1

• Start with approx. 80 grams per 10 m³

• Test the pH level and repeat if necessary

• Ideal pH level: 7.2 – 7.6

• Maximum 300 grams per 10 m³ per treatment

Key features

• Effectively lowers the pH level

• Essential for a stable water balance

• Improves the effectiveness of chlorine and bromine

• Suitable for spas, hot tubs, and swimming pools

• Indoor and outdoor use

• Form: powder

• Contents: 1.5 kg

PH+ Powder (5 kg) – Melpool

Melpool pH+ Powder is a high-quality pH increaser for spas, hot tubs, and swimming pools. A pH level that is too low can lead to corrosion of components, skin and eye irritation, and reduced effectiveness of disinfectants. With Melpool pH+, you can gradually bring the water back to the ideal pH range of 7.2 to 7.6.

Why raising the pH is important
When the pH level is too low, the water becomes aggressive and can cause damage to pipes, pumps, and heating elements. By adjusting the pH correctly, you improve bathing comfort, protect the installation, and optimize the effectiveness of chlorine or bromine.

Suitable for spas and swimming pools
This pH-increasing powder is suitable for indoor and outdoor pools and can be safely used in spas, hot tubs, and swimming pools. The product is dissolved in water and distributed evenly for accurate dosing.

Easy and controlled dosing
By dosing gradually, you maintain complete control over the water balance. Regular testing of the pH level is strongly recommended for optimal results.

Directions for use

• Depending on the alkalinity, 40–100 grams per 10 m³ of water increases the pH level by 0.1

• Start with approx. 80 grams per 10 m³

• Test the pH level and repeat if necessary

• Ideal pH level: 7.2 – 7.6

• Maximum 300 grams per 10 m³ per treatment

Key features

• Effectively increases the pH level

• Essential for a stable water balance

• Improves the effectiveness of disinfectants

• Suitable for spas, hot tubs, and swimming pools

• Indoor and outdoor use

• Form: powder

• Contents: 5 kg

pH- Lowering Powder (7 kg) – Melpool

Melpool pH- Lowering Powder is a powerful pH-lowering agent for spas, hot tubs, and swimming pools. An excessively high pH level reduces the effectiveness of disinfectants and can lead to limescale deposits and skin or eye irritation. With pH- Lowering Powder, you can bring the water back to the ideal pH range of 7.2 to 7.6 in a controlled manner.

Why lowering the pH is important
When the pH level is too high, chlorine and bromine become less effective, and the risk of cloudy water increases. By adjusting the pH correctly, you improve water quality, extend the lifespan of components, and enhance comfort while bathing.

Suitable for spas and swimming pools
This product is suitable for indoor and outdoor use and can be safely used in spas, hot tubs, and swimming pools. The powder is dissolved in water and distributed evenly for accurate and controlled dosing.

Easy and controlled dosing
By working step by step, you maintain complete control over the water balance. Regularly testing the pH level is essential for optimal results.

Directions for use

• Depending on the alkalinity, 40–100 grams per 10 m³ of water lowers the pH level by 0.1

• Start with approx. 80 grams per 10 m³

• Test the pH level and repeat if necessary

• Ideal pH level: 7.2 – 7.6

• Maximum 300 grams per 10 m³ per treatment

Key features

• Effectively lowers the pH level

• Essential for a stable water balance

• Improves the effectiveness of chlorine and bromine

• Suitable for spas, hot tubs, and swimming pools

• Indoor and outdoor use

• Form: powder

• Contents: 7 kg