The Fiji Cube 2.75" x 8" Felt 200 Micron Filter Sock can be used in the filter sock holders that come in the Fiji Cube DIY Sump Baffle Kits and other compatible sock holders. This filter sock comes with a plastic ring, which makes replacement quicker and easier.
NOTE: These will only fit Fiji Cube Aquariums & Baffle Kits. They will NOT fit any other aquariums.
