Red Sea Coral Reef Sea Salt 20kg BoxNEW AND IMPROVED FORMULA! Great news Red Sea Salts have become even better! With the higher dissolvability of our new & improved formula, there is no need to schedule your mixing in advance, as it now takes only 20 minutes from bucket to tank! Red Sea Reef Sea Salt provides the parameters of NSW with a slightly elevated KH. Ideal for SPS Dominant, UNLS & Marine Fish tanks Red Sea Salt is designed to provide the exact parameters of tropical reef water