Kent Marine Pro-Dechlorinator A simple, one-step solution to safely neutralize tap water Concentrated formula-5 ml treats 50 gallons of water Safe for sensitive hard and soft corals, anemones, other invertebrates and freshwater and marine fish and plants Does not contain a slime coat protector that can interfere with protein skimming Can be used directly in freshwater and marine aquariums to neutralize chlorine, chloramines and heavy metals