Unique combination of oxygen supply circulation and nutrient decompositonample space for micro organisms thanks to surface optimised fibre structureideal supplement for the filtomatic cws and filtoclear filter capacities can be increased up to 25attractive plant effect designavailable as a set with pump in three capacity classesfor connecting to existing pumps including adaptor for 9mm hosesguaranted 2 yearsdimensions 144 x 290biological filter surface 15m max operating pressure 040