Every time a fish is netted or handled its protective slime coating is disturbed, causing a loss of essential electrolytes through the skin. This leads to suppression of the immune system. Stress Coat replaces the slime coat and treats damaged tissue with the proven healing properties of Aloe Vera.In addition, Stress Coat removes chlorine, neutralizes chloramines, and detoxifies heavy metals.Treats 960 U.S. Gallons of fresh or salt water.