Instant Ocean synthetic sea salt Ocean Aquarium Salt simulates natural seawater for thriving marine aquariums. Developed through sophisticated biological and chemical testing, InstantOceanprovides your marine fish, invertebrates, and plants the necessary major, minor, and trace elements. Provides a clear saltwater solution in minutes and reaches proper pH quickly. Exceptional solubility, uniform particle size, and superior material selection madeInstantOceanthe standard by which other synthetic sea salts are measured. No other product has such an extensive history of successful proven usage.