API® BETTAFIX fish remedy is an all-natural, antibacterial fish remedy for Bettas that should be used whenever your Betta exhibits signs of disease, such as wounds, ulcers, mouth fungus, fin & tail rot, slimy patches, and cottony growths. BETTAFIX fish remedy aids in healing damaged tissue as a result of handling, netting, and fighting using the healing power of Melaleuca – a variety of Tea Tree oil – which promotes rapid re-growth of damaged fins and skin. Add 9 drops per pint (473 ml) or 18 drops per quart (946 ml) of bowl or aquarium water. For larger aquariums, add ½ teaspoonful (2.5 ml) per gallon (3.8 L) of water. Repeat dose daily for up to 7 days, and then make a water change. Treatment may be repeated, if necessary. For tropical fish use only.