API Melafix is a natural, botanical-based treatment designed to heal bacterial infections in both fresh and saltwater aquariums. It’s particularly effective for treating open wounds, tail rot, eye cloud, and other bacterial conditions. Melafix promotes regrowth of damaged tissue and fins without adversely affecting the biological filter, water quality, or the fish themselves. Safe for reef aquariums and live plants, it’s a gentle yet powerful remedy to keep on hand for maintaining a healthy tank. 16oz container.