Aqua-Pics Amazon KH Buffer 120g
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 Type | Buffer Solution |
| Active Ingredient | Carbonate Buffer |
| Volume | 120g |
| Target pH Range | 6.5 – 6.8 |
| Recommended Use | Amazon Basin fish species |
| Phosphate Content | Chemically clean, low levels |
FAQ
Can this product be used in a freshwater aquarium with a pH below 6.0?
Please contact customer service
Does this buffer affect water hardness beyond KH?
No, it specifically targets KH and does not alter general hardness or other water parameters.
Is this product safe for use with live plants?
Yes, it contains chemically clean phosphates that are unlikely to promote algae growth.

Oliver Tucker –
Used this buffer for my discus tank and noticed a significant improvement in water stability. The pH stayed consistently between 6.6 and 6.7 over several weeks. My fish seem more active and less stressed. No algae issues observed after using it regularly.
Brian White –
Good product for maintaining stable pH in an Amazon fish setup. Added a teaspoon to 8 liters as directed and saw a steady KH increase. Works well with tetras and Apistogramma. Slight delay in full effect after first use, but it settled in quickly.
Zoe Morgan –
My L-number catfish have been thriving since I started using this buffer. The water pH remains stable without fluctuations. The instructions are clear and the product is easy to measure and mix.