SR Aquaristik 4" Felt Filter Sock (200 micron)

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4” Replacement Filter Socks (Felt) 200 Micron Removes very fine debris from the water Fits most common sumps and holders Reinforced stitching for longer life SR Aquaristik Replacem ent Filter Socks are generally used in filter sumps, overflows, or anywhere turbidity or debris needs to be removed from aquarium water. Using a filter sock reduces maintenance and increases the efficiency of chemical and biological filter media by removing small debris that can clog or be trapped. Felt filter socks are great for removing large amounts of debris but do not clog as quickly as nylon. Nylon filter socks generally need to be cleaned more often but are easier to clean. Show more