Key Features 250ml Treats 5688 Litres (1250 Gallons) Quick and easy to use Effective Water treatment Helps to combat Fungal and Bacterial Infections in fish Harmless to pond wildlife and fish. Some of the most common fish ailments that effect delicate pond fish are Fungal and Bacterial based infections. If these are not treated they can disfigure and over time, kill ornamental fish. Banish Fish Fungus and Bacteria Treatment is a quick and effective treatment that safely resolves the problem without harming the fish or without disturbing the natural balance in the pond. The solution is simple to use. Add 10ml per 225 litres (50 gallons) of pond water. Pour into the pond and repeat after a week if the symptoms still persist.