Prime Concentrated Conditioner for Marine and Freshwater Fish that Removes Chlorine and Chloramine, and it detoxifies Ammonia, Nitrite and Nitrate to make Tap water safe for Fish and Aquatic animals and reptiles and gives them a Slime Coating from the chemicals in the tap water Government puts into our watersystem to make it safer for Human but it is not safe for us either. A couple of drops for a bucket of tap water and let it sit for 24 hours. I also use the Aquarium Salt.