Non-Phosphate Buffer to Lower pH in your Aquarium Acid Buffer™ is a non-phosphate buffer. This lowers pH and buffers with Alkaline Buffer™. Both buffers are designed for the planted aquarium or for very hard water. In these aquarium environments, phosphate buffers can cause algae or cloudiness problem. Acid Buffer™ lowers pH. It also buffers between 5.0 and 8.0, when used with Alkaline Buffer™. As Acid Buffer™ lowers pH, it converts carbonate alkalinity (KH) into available CO2. It may also be used to safely lower pH in marine water. Acid Buffer™ does not contain phosphates. This distinguishes it from other buffers. This makes it ideal for the planted aquarium. In planted aquariums, excess phosphates can contribute to undesirable algae growth.
