MELAFIX smoothes the transition from store to home by reducing the risk of your fish developing a disease. The fish you bought may already carry a disease. The disease is often difficult to detect, particularly in its early stages. To treat these fish and reduce the risk of contaminating other fish use MELAFIX, an all-natural treatment. Bacterial disease destroys fish tissue. MELAFIX heals open wounds abrasions, treats fin and tail rot, eye cloud, mouth fungus, and promotes re-growth of damaged fin rays & tissue. Will not adversely affect the biological filter, alter the pH, or discolor water. Safe for reef aquariums and live plants. For use in fresh or salt water aquariums.