API AMMO LOCK ammonia detoxifier is proven to convert poisonous ammonia into a non toxic form. AMMO LOCK ammonia detoxifier works instantly in both fresh and saltwater aquariums, removing ammonia, chlorine, and chloramines. Note that if your aquarium tests positive for ammonia, it is necessary to perform a partial water change first, and then neutralize the ammonia. AMMO LOCK ammonia detoxifier is now detectable by API Ammonia Test Kits. Safety Information Please Read Instructions Before Use Directions Add 5 ml. per 10 gallons of aquarium water. Add every two days until ammonia is not detected.