King British Filter Aid contains denitrifying bacteria, which break down and remove harmful substances produced by decomposing food, fish waste and plant debris, resulting in cleaner, clearer water. Use when setting up a new aquarium, following partial water changes or to boost filtration following the use of aquatic medicines. For use in coldwater, tropical and marine aquariums. Available in 100ml and 250ml bottles. Composition: Denitrifying bacteria.
