Makes tap water safe for fish, Instantly neutralizes chlorine, chloramines and heavy metals, Chlorine and chloramines are added to public water supplies to sanitize tap water, Both are toxic to fish, Some tap water also contains heavy metals at concentrations not considered to be toxic to humans but are still toxic to some species of fish, All of these must be removed to make the water safe for your fish, Add 5 teaspoons for every 125 gallons of water, Bottle cap holds 5 teaspoons, Apply each time new water is added to the tank or pond, Fish can be added after through mixing, , Makes Tap Water Safe, Instant Neutralized Cholrine SKU: RNRDST3257