Highly-effective alkalinity(KH)-increasing (buffer) solutionHelps increase pH stability in an aquarium by raising the alkalinityProvides a source of carbonates, which make up the majority byweight of aragonite, the mineral secreted by reef-building organismsas skeletal materialContinued addition raises pH until 8.3 is reached, at which pointthe pH remains unchanged and the alkalinity alone increasesOver 50% stronger than most competing productsFree of phosphate, silicate, and organic materialFormulated by a marine scientist