Gold Buffer™is a non-phosphate buffer that will maintain the ideal pH for goldfish while not enhancing algae growth. Depending on dosage, Gold Buffer™ raises pH and buffers between 7.2 and 7.8. It is gentle, safe, and enhances the freshwater environment. It is compatible with all other Seachem buffers. Contains sodium, potassium, magnesium, and other bicarbonate salts.