API Stress Coat water conditioner makes tap water safe for fish by removing chlorine, chloramines and heavy metals from tap water. It contains the healing power of Aloe Vera to reduce fish stress by up to 40% and to heal damaged tissue and wounds. The World's top-selling water conditioner containing Aloe Vera, nature's liquid bandage, to protect and heal fish. It forms a synthetic slime coating. API Aquarium Stress Coat is a dual action aquarium treatment. It makes tap water safe by removing chlorine, chloramine and ammonia. Stress Coat also aids healing of fish and reduces stress. Containing the healing power of Aloe Vera, the treatment forms a synthetic slime coating on the fish and replaces the natural slime that is disrupted by handling, shipping and other forms of stress. It helps to reduce susceptibility to disease and infection, heals torn fins and skin wounds while reducing electrolyte loss. Can be used when performing a partial water change, starting a new aquarium and adding new fish.