Filter substrate - the basic material in the biological filtration process. Porous, ceramic, thanks to the very large active surface maintains the biological balance in the pond and helps prevent water blooms.

It has a huge active (filtration) surface, which is created by a complicated network of channels and pores. They are an excellent habitat for beneficial nitrifying bacteria of the genera Nitrosomonas and Nitrobacter. These bacteria use metabolism toxic to fish in their life processes.

Ceramics may not be replaced for a long time. When cleaning the filter, rinse the element in water drained from the aquarium.

1 Bag = 0.7 kg