Aqua One's fish pharmaceutical products are designed to give your fresh water fish a happy life. Aqua One Fungus and Fin Rot Remedy 50ml is designed to treat for common fungal infections like fin & tail rot diease in freshwater fish and also to help prevent the spread to other fish in your aquarium. Use Aqua One Fungus & Fin Rot Remedy 50ml with the confidence that Aqua One is one of Australia's most trusted fish brands.