"Alkaline Buffer? is a non?phosphate buffer to raise pH and alkalinity (KH)
and buffer with Acid Buffer?. These buffers are designed for the planted
aquarium or for very hard water where phosphate buffers may pose an algae
or cloudiness problem. Alkaline Buffer? raises pH and buffers between 7.2
and 8.5. It is gentle, safe, and enhances the freshwater environment."