King British - Filter Aid+ 100ml - For Cleaner & Clearer Water - Boosts the Aquarium’s Biological Filter - Removes Harmful Ammonia & Nitrite - For Coldwater, Tropical & Marine Aquariums

Formerly known as "Safe Water", King British Filter Aid+ is a rich-source of friendly-microbes that will help you maintain better water quality in your aquarium. Using on a weekly basis will reduce harmful ammonia andamp; nitrite, making the water safer for your fish. Regular use improves the development of the biological filter for clean, clear water. For use in coldwater, tropical and marine aquariums. One 100ml bottle will enrich up to 900 litres....