The 16 fluid ounce container of API Stress Coat+ is a patented aquatic medication containing aloe vera, nature's liquid bandage, to protect and heal fish from a wide variety of various ailments. The aloe vera helps to reduce fish stress by up to 40%, reduces electrolyte loss as well as effectively heals damaged tissue and wounds. The solution forms an essential synthetic slime coating on the skin of fish, protecting them from harmful bacteria and injury. It also replaces the natural secretion of slime that is lost or reduced through handling, shipping, fish fighting, or other forms of stress. The formula can be used when starting an aquarium, performing monthly water changes and when adding new fish to your established aquarium. API Stress Coat+ neutralizes heavy metals and removes ammonia, chlorine, and chloramines instantly without causing harm to the sensitive inhabitants of your aquarium. Recommended by professional fish handlers to add to fish bags for protection on the trip home from the aquarium.