FOR FRESHWATER AND MARINE aquariumS: Tetra AquaSafe Plus works instantly to make tap water safe for fish. ADVANCED FORMULA: Neutralizes or removes harmful chlorine, chloramines and heavy metals. PROTECTS FISH: Enhances protective slime coat to help wounds heal. CLEAR AND HEALTHY WATER: With natural biopolymers and essential vitamins and minerals. WATER CONDITIONER: Use when setting up a new aquarium, with monthly partial water changes, or evaporation replacement. Age Range Description: All Ranges Included Components: Tetraaqua Aquasafe Water Conditioner (33.8 Oz) Works in seconds to neutralize chlorine, chloramines, and heavy metals present in tap water that can be harful to fish Provides a slime coat to help wounds heal and protect fish from abrasions AquaSafe Plus is the market-leading water conditioner brand in the US and has been protecting fish for more than 35 years One teaspoon treats 10 gallons AquaSafe Plus can be used with freshwater and marine fish