Description : 2231418437_6416880901 Alkaline buffer is a non-phosphate buffer. This product is designed for the planted aquarium or for very hard water where phosphate buffers may pose an algae or cloudiness problem. Alkaline Buffer raised pH and buffers between 7.2 and 7.8. It is gentle; safe and enhances the freshwater environment. It may be combine with Acid Buffer at fixed ratios to obtain a target pH. Compatible with all other Seachem buffers. Contains sodium; potassium; magnesium and other bicarbonate salts. Treats 1600 gallons.