SuperFish POND AQWISE floating filter media 20 L PRO

It has an increased effective area by 30%. It has small rays that do not point to the center, they are on the outside of the rings, which run like a spiral on its surface, so a vortex is created. As a result, the exchange of water and oxygen is extremely high. Blockage of the media is eliminated. Thus, even with a small volume they can create a large biological filtration, which is why they are used in professional filters SF POLY TECH MOVE. Read more