Red Sea Fish Pharm ARE11065 Coral Reef Marine Salt for Aquarium, 175-Gallon Premium sea salt formula, based on the natural salt harvested by solar evaporation of the waters of the exotic It is enriched with other fine minerals to faithfully replicate natural seawater for your aquarium Salt has become famous for its favorable effects on invertebrates Every batch is biologically and chemically tested for quality control Available in 175-gallon