NovAqua detoxifies chlorine, heavy metals and other harmful substances from the water in both fresh and saltwater aquariums. It protects the fish and relieves stress. NovAqua provides a protective colloid coating on a fish's body needed when the natural slime has been depleted or scraped off during netting. It detoxifies free copper ions and remove chlorine. NovAqua contains cations and anions that are required by freshwater fish. NovAqua's temporary buffering action is designed to prevent pH shock. NovAqua should be used whenever tap water is added or fish show signs of stress.