STRESS COAT Marine is the only fish & tap water conditioner containing the healing power of Aloe Vera. The specially formulated version for marine aquariums is designed to work in the special conditions of the marine environment and works wonderfully with protein skimmers and will not cause foaming. Stress Coat Marine is reef safe and removes chlorine, chloramines and ammonia from tap water and is scientifically proven to reduce stress. Heals damaged tissue and promotes tissue regeneration. Enhances slime coat. Use when netting or handling fish, or when not pre-filtering water. Special formulation for the Marine Environment Safe for Reef Aquariums Will not cause foaming Removes Chlorine, Cloramines and Ammonia Convenient Dosing Cap Use every time you make a partial water change 16oz treats up to 946, 8oz (473 gal) Info from API