Red Sea Salt 22KgRed Sea Salt 22Kg Formula now in stock for next day delivery! Red Sea Salt is designed to provide the exact parameters of tropical reef water with a slightly elevated alkalinity as needed in a closed marine system. Red Sea salt is ideal for fish and invertebrate systems, mature or low nutrient SPS tanks. The choice of salt formula is the most fundamental issue in the success of any marine or coral reef aquarium. Unlike vertebrates or higher animals,