Aqua-Pics Amazon KH Buffer 400g
Amazon KH Buffer helps your aquarium water emulate the waters of the Amazon Basin by raising KH (carbonate hardness) without compromising the slightly acidic pH required for fish that come from this region, such as discus, tetras, Apistogramma and L-number catfish. It raises KH and locks in pH to approximately 6.5 to 6.8, stopping pH fluctuation, creating pH stability and reducing stress on fish. Contains chemically clean phosphates, which should not exacerbate algae.
Directions: 1 level teaspoon to 8 litres of water will raise KH by approximately 6dKH or 107ppm and stabilise pH to around 6.5 to 6.8.
| Specification | Value |
|---|---|
| Product Weight | 400g |
| Target pH Range | 6.5 – 6.8 |
| Effective KH Increase | 6 dKH (107 ppm) per 8 litres |
| Phosphate Content | Chemically clean, low levels |
FAQ
Can this product be used in a freshwater aquarium with fish that require slightly acidic water?
Yes, it is specifically formulated for aquariums with fish that thrive in slightly acidic conditions, such as discus, tetras, Apistogramma, and L-number catfish.
Does this buffer affect the phosphate levels in the tank?
It contains chemically clean phosphates in low levels, which are unlikely to promote algae growth.
How much should I add to my tank to raise KH by 6 dKH?
One level teaspoon per 8 litres of water will raise KH by approximately 6 dKH and stabilize pH to 6.5 to 6.8.

Jack Nolan –
Used this in my discus tank for a few weeks. The pH stayed steady between 6.6 and 6.7. My fish seem more active and less stressed. No algae issues noticed after using it regularly.
Melanie Hodges –
Good for maintaining stable pH in a tropical tank. Added it once a week and the KH level stayed consistent. Works well with tetras and small catfish.
Ian Knox –
My Apistogramma fish have been thriving since I started using this buffer. The water pH remains stable and the fish show no signs of stress or color fading.
Thomas Churchill –
It’s easy to measure and apply. After adding one teaspoon to 8 litres, the pH stabilized quickly. No noticeable changes in water chemistry beyond what was expected.