Red Sea 225 Micron Felt Filter Sock - 4" x 10.5"

Red Sea Micron Felt & Thin Mesh aquarium filter bags are high quality, reusable aquarium filter bags providing different levels of mechanical filtration. These 10.5″/26cm long filter bags for Red Sea’s REEFER filter and MAX-S aquariums will also fit any standard 4″/10cm bag holder. 225 micron thin-mesh aquarium filter bags are perfect for new setups and after heavy maintenance or whenever there is a lot of particulate matter in the water. They are also suitable as a holder for other mechanical or chemical filter media. The monofilament construction of these bags makes them very easy to clean.