Concentrated. Instantly removes chlorine and detoxifies heavy metals from tap water. Safe for all aquarium life. One teaspoon treats 10 gallons.
Use Instructions: Use when setting up an aquarium, and when adding or changing water. To remove chlorine and detoxify heavy metals: Add 2 drops for each U.S. gallon (3.8 L), or 1/4 tsp. (1.25 ml) per 20 U.S. gallons (76 L) of aquarium water.To detoxify chloramines: Add 6 drops per U.S. gallon (3.8 L) or 3/4 tsp. (3.75 ml) per 20 U.S. gallons (76 L). Heavy metals, such as copper, lead and zinc, can be found in most tap water supplies. These metals are toxic to tropical fish. So treat the aquarium when adding tap water.