LTWHOME Compatible Coarse Foam Filter Pads Fish Tank Fits Juwel Standard/BioFlow 6.0(Pack of 6) Foam size:125 mm x 125 mm x 48 mm High quality,Performs mechanical filtration!Traps Particles & Debris Enhances biological filtration Provides efficient water flow with less clogging for long lasting filtration Coarse foam filter pads to compatible For the Juwel Standard / BioFlow 6.0 filter.