Replacement Filter Media Sponge for 28-gallon Nano Cubes

Replacement filter media for Nano Cube aquariumsSpecially sized mechanical, chemical, and biological filter media3-stage filtration to help maintain optimum water qualityReplacement filter media for Nano Cube aquariums. Specially sized to fit within the Nano Cube filtration system for optimum filtration and water quality for your aquarium inhabitants. Mechanical Filter Sponge traps detritus and free-floating particulate matter. Activated carbon bag removes dissolved organics and odors. Ceramic Rings provide the ideal environment for beneficial bacteria.Please see "More Information" for recommended maintenance.