Free shipping from €50 (and to Belgium from €100.00)
Many Payment Methods, including iDEAL, PayPal, Apple Pay, Google Pay, Credit Card & Bancontact.
Free shipping from €50 (and to Belgium from €100.00)
Many Payment Methods, including iDEAL, PayPal, Apple Pay, Google Pay, Credit Card & Bancontact.
Free shipping from €50 (and to Belgium from €100.00)
Many Payment Methods, including iDEAL, PayPal, Apple Pay, Google Pay, Credit Card & Bancontact.
Free shipping from €50 (and to Belgium from €100.00)
Many Payment Methods, including iDEAL, PayPal, Apple Pay, Google Pay, Credit Card & Bancontact.
Free shipping from €50 (and to Belgium from €100.00)
Many Payment Methods, including iDEAL, PayPal, Apple Pay, Google Pay, Credit Card & Bancontact.
Free shipping from €50 (and to Belgium from €100.00)
Many Payment Methods, including iDEAL, PayPal, Apple Pay, Google Pay, Credit Card & Bancontact.
Free shipping from €50 (and to Belgium from €100.00)
Many Payment Methods, including iDEAL, PayPal, Apple Pay, Google Pay, Credit Card & Bancontact.
Free shipping from €50 (and to Belgium from €100.00)
Many Payment Methods, including iDEAL, PayPal, Apple Pay, Google Pay, Credit Card & Bancontact.
Welcome to MaJa Koi
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Swimming pool
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Jacuzzi/Spa
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Aquatic Science
PH-1 kg - Aquatic Science
€29,00
PH- 1 kg – Aquatic Science
Reliable pH reduction for clear and stable pond water
PH- 1 kg from Aquatic Science is a powerful and controlled pH reducer for ponds and swimming ponds. When the pH rises above 8.2, water hardness (GH/KH) can become difficult to adjust due to precipitation. This treatment quickly corrects the pH, allowing the mineral balance to be restored and products such as GH+, KH+ and Optiminera to become effective again.
The product works within 24–48 hours, prevents limescale buildup and supports a stable ecosystem. Regular application is particularly useful during rainfall, hard water inflow, strong water movement or seasonal fluctuations.
Key features
-
Lowers pH by 1–2 points per treatment
-
Essential before GH/KH/Optiminera corrections
-
Reduces limescale buildup and precipitation
-
Stabilises water chemistry for better filtration
-
Suitable for ponds and swimming ponds
-
Safe to use when dosed carefully
Application & Dosage
-
Shake well before use
-
Mix with pond water beforehand and spread evenly
-
Recommended dosage: 25 g per m³ lowers pH by 1–2 units
-
Always leave 24 hours between treatments
-
Check pH and KH (at least KH 6 for pH stability)
-
Store in a dry place, shelf life 12 months
Choose your location
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Evolution HQ
Free
Usually ready for pickup in 24 hours
75 9th Ave, New York, NY 10011, USA
📞 (+1) 212-456-7890
🕐 Mon – Fri: 8:30 am – 10:30 pm
Sat: 8:30 am – 10:30 pm
Sun: Closed -
Downtown Branch
$5 Same-Day Pickup
Ready within 6 hours
240 Broadway, New York, NY 10007, USA
📞 (+1) 212-987-6543
🕐 Mon – Sun: 9 am – 9 pm -
Queens Service Center
Free
Ready next business day
89-10 Queens Blvd, Elmhurst, NY 11373, USA
📞 (+1) 917-555-3344
🕐 Mon – Fri: 9 am – 8 pm
Sat: 10 am – 6 pm
Sun: Closed
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Aquatic Science
PH-1 kg - Aquatic Science
€29,00
Estimated Shipping Widget will be displayed here!
Free shipping from €50 (€100 to Belgium), or pick up from our physical location
Over 300 customers rate MaJa Koi a 9.5
PH- 1 kg – Aquatic Science
Reliable pH reduction for clear and stable pond water
PH- 1 kg from Aquatic Science is a powerful and controlled pH reducer for ponds and swimming ponds. When the pH rises above 8.2, water hardness (GH/KH) can become difficult to adjust due to precipitation. This treatment quickly corrects the pH, allowing the mineral balance to be restored and products such as GH+, KH+ and Optiminera to become effective again.
The product works within 24–48 hours, prevents limescale buildup and supports a stable ecosystem. Regular application is particularly useful during rainfall, hard water inflow, strong water movement or seasonal fluctuations.
Key features
-
Lowers pH by 1–2 points per treatment
-
Essential before GH/KH/Optiminera corrections
-
Reduces limescale buildup and precipitation
-
Stabilises water chemistry for better filtration
-
Suitable for ponds and swimming ponds
-
Safe to use when dosed carefully
Application & Dosage
-
Shake well before use
-
Mix with pond water beforehand and spread evenly
-
Recommended dosage: 25 g per m³ lowers pH by 1–2 units
-
Always leave 24 hours between treatments
-
Check pH and KH (at least KH 6 for pH stability)
-
Store in a dry place, shelf life 12 months
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