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
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