Ammonia Remover is ideal for new or heavily populated freshwater aquariums. It removes and controls harmful ammonia and nitrite to create a healthy aquatic environment. Controlling ammonia levels is also critical for reducing stress on fish. Natural ion-exchange (clinoptilolite) chemical filter media Effectively removes and controls toxic ammonia Ideal for new or heavily populated aquariums Reduces fish stress and prevents livestock loss For best results, replace every 4 weeks For use in freshwater aquariums