CONDITIONS aquarium WATER: Essential care formula protects fish and reduces stress. MAKES TAP WATER SAFE: Monthly treatment with partial water changes removes harmful chlorine. INSTANT RESULTS: Works quickly to make tap water safe for fish. ESSENTIAL WATER CARE: Use when setting up a new aquarium, with monthly partial water changes or evaporation replacement. USAGE: Add 2 teaspoons for every 10 gallons of aquarium water. NEW LOOK: Packaging may vary Age range description: All Life Stages