API Tap Water Conditioner treatment removes toxins from tap water instantly, so you can add fish to your aquarium (or add them back after a water change) immediately. API ap Water Conditioner treatment dechlorinates aquarium and tap water, detoxifies heavy metals, and may be used in both fresh and saltwater. 

Instructions:

To remove chlorine and detoxify heavy metals Add 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.