To remove chlorine and detoxify heavy metalsAdd 1 ml per 20 U.S. gallons (75.7 L) of tap water being treated.To detoxify chloramines(break the chloramines bond)Add 1 ml per 5 U.S. gallons (18.9 L) of tap water.
API Tap Water Conditioner
Size: 16 fl. oz.
Aquarium Size: