Juwel BioPad M Poly Pad for Bioflow M (3.0). These are the first stage in the Juwel's filtration and removes all the fine particles preventing the other foams from blocking up as often. Replace the poly pad on a weekly basis to keep your aquarium crystal clear. x 5 Biopads per pack. Suitable for Rio 125, Rio 180, Rio 240, Lido 120, Lido 200, Vision 180 & Trigon 190.