Aquarium Systems Instant Ocean is a synthetic sea salt mix designed for marine and reef aquariums. Since 1964, it has been a preferred choice among hobbyists, public aquariums, and scientific research facilities for its consistent quality and formulation. Instant Ocean contains all the necessary major, minor, and trace elements found in natural seawater, facilitating the growth of corals and other invertebrates in a reef aquarium. It is free from nitrates and phosphates, which can promote the growth of algae and damage coral. The salt dissolves quickly without leaving insoluble residue, ensuring a clear saltwater solution in minutes.