NT Labs Aquarium pH Stabiliser – KH Up 180g replenishes carbonate hardness (KH) to help maintain stable pH levels in freshwater aquariums. Suitable for tropical and coldwater setups, this powdered mineral buffer supports consistent water conditions.
Key Features
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Replenishes KH to help protect against unstable pH levels.
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Suitable for tropical and coldwater freshwater aquariums.
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Blend of bicarbonate and carbonate minerals provides targeted buffering.
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Free from added phosphate and nitrate.
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Measured powder dosage allows controlled adjustments.
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One 180g jar treats up to 3,000 litres when increasing KH by 2 dKH.
Product Description
Maintain your aquarium’s buffering capacity with NT Labs Aquarium KH Up – pH Stabiliser. Carbonate hardness can decline as biological processes take place in aquarium water. When KH becomes too low, the water has less capacity to resist changes in pH.
This powdered treatment contains bicarbonate and carbonate minerals to increase and replenish KH, helping stabilise freshwater aquarium conditions. Its phosphate- and nitrate-free formulation avoids introducing these nutrients during treatment.
Use alongside regular KH testing to make measured adjustments appropriate to your aquarium’s inhabitants. Each 6g dose treats 100 litres, increasing carbonate hardness by approximately 2 dKH.
Specifications
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Brand: NT Labs
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Product: Aquarium pH Stabiliser – KH Up
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Pack size: 180g
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Treatment type: Powdered mineral buffer
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Function: Increases carbonate hardness to help stabilise pH
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Suitable for: Tropical and coldwater freshwater aquariums only
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Mineral blend: Bicarbonate and carbonate minerals
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Dosage: 6g, approximately one level teaspoon, per 100 litres to increase KH by 2 dKH
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Total treatment capacity: Up to 3,000 litres when increasing KH by 2 dKH
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Maximum adjustment: Do not increase KH by more than 2 dKH within 24 hours
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Barcode: 733809002042
Usage Tips
Test KH before treatment and calculate the dose for your aquarium’s water volume. Follow the product label instructions and check KH weekly using a suitable aquarium hardness test, adding further treatment only as required.
Do not increase KH by more than 2 dKH in any 24-hour period. Choose a target KH appropriate to the fish and plants you keep.
Support Stable Aquarium Conditions
Choose NT Labs Aquarium pH Stabiliser – KH Up 180g for controlled KH replenishment and more stable freshwater aquarium conditions.






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