The added ingredients help to reduce aquarium pollution;Works in seconds to neutralize chlorine, chloramines, and heavy metals present in tap water that can be harmful to fish;Provides a slime coating to help wounds heal and protect fish from abrasions;AquaSafeﾃつｮ can be used with freshwater and marine fish;AquaSafeﾃつｮ is the market leading water conditioner brand in the US and has been protecting fish for over 30 years