Product Description King British Safe Water for Ponds Helps maintain a healthy environment for fish by removing harmful ammonia & nitrite. Uses 4 types of nitrifying bacteria to naturally oxidise ammonia and nitrite into nitrate. Plus a 5th type of bacteria - Bacillus - which breaks down organic matter in the filter. Effective in a wide range of water conditions including varying pH, hardness, temperature and salinity. For use with tropical, coldwater, and marine fish. Sizes: 250ml, 500ml, 1lt
