PondCare® MelaFix® 16 oz 16 oz. (480 ml) treats up to 4,800 U.S. gallons (18,168 L/ 4,000 UK Imp. Gal) Antibacterial remedy for the treatment of koi and goldfish diseases including eye cloud, mouth fungus and fin & tail rot. All-natural antibacterial remedy rapidly repairs damaged fins, ulcers and open wounds. Use when adding new fish to the pond. Safe for snails and other invertebrates. Will not harm aquatic plants, affect the pH or adversely affect the biological filter. POND KING RECOMMENDED !! Treats ulcers & open wounds Rapidly repairs damaged fins Treats fin & tail rot Use when introducing fish Safe for aquatic plants Will not affect the biological filter or alter the pH of the pond Directions for Use: Shake well before using. Remove activated carbon and turn off UV and ozone-producing units during treatment period. 16 oz. (480 ml) treats up to 4,800 U.S. gallons (18,168 L/ 4,000 UK Imp. Gal)