Aquarium Filter Media Bag - 10 Pcs Durable Nylon Fine Mesh with Zipper for Koi Pond, Canister, Fish Tank Filter, Pellet Carbon, Bio Balls, Ceramic Rings (6 x 8 Inch)
5 pcs Aquarium Filter Media Bags: Each bag measures approximately 15 x 20 cm (6 x 8 inches), with a hole size of 2mm x 4mm, ideal for holding filter media of appropriate size. Not suitable for media smaller than 1mm
