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. 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.