3Pcs 4 Inch Ring Filter Socks 200 Micron, Aquarium Felt Socks, Pool Filter Bags for Freshwater Saltwater Aquariums Fish Tank, Sump Filter Socks, Use in Ponds Overflows, 4 Inch Ring by 10 Inch Long - AYWFEY, F-3p-10inch-guolv-sock-US

• Filter Sock Size: Aquarium filter socks are about 10inch/27cm long, about 4inch/10.4cm in diameter, and about 200 microns in aperture. Excellent Filtration Ability: These 200 micron ring filter socks use excellent mechanical filtration capabilities to reduce the amount of ammonia-producing organic matter in the aquarium and improve water quality by capturing debris, excess food, etc. It will neither clog easily like small microns, nor will it be as uncatchable as larger mesh filter socks, and is a extremely scientific design. Robust & Reusable: These filter socks are made of high-quality durable polyester for a long life. Coupled with the sock's own sturdy construction and heavy-duty stitching, the double buff blessing makes it even more durable. So it can be cleaned and reused many times!!! Multifunction: Aquarium filter socks are designed to filter impurities in the water, keep the aquarium water clear and clean and provide a comfortable living environment for the creatures in the aquarium. At the same time, to a certain extent, large and small objects such as sand and corals are prevented from damaging the aquarium equipment. Packing List: 3 x aquarium filter socks, the quantity is enough for your daily use and replacement, you can also share with family and friends.