Aqueon Ammonia NeutralizerAqueon Ammonia Neutralizer is the easy way to make sure your fish live in a clean, healthy environment. It removes toxic ammonia and nitrites from fish waste and other organic debris and neutralizes chlorine from tap water to create a safe habitat for your fish. Neutralizes ammonia and nitrites that can build up in aquarium water Acts as a conditioner by neutralizing chlorine and chloramines Helps prep new water and make existing water safe for fish