King British Filter Aid Safe Water Fish Tank Aquarium Nitrite Ammonia Treatment 250Ml

King British Filter Aid+ is a water treatment designed to improve water quality in aquariums and ponds. Poor water conditions are a leading cause of stress in fish and can be harmful if left untreated. Filter Aid+ works by oxidising toxic ammonia and nitrite into less harmful nitrate, which can be used by plants as a food source or removed through regular water changes. Suitable for tropical, coldwater, and marine aquariums, it helps maintain a safe environment for healthy fish.