Oceanic 82105 BioCube Original Replacement Filter Cartridges, 2-Pack
Available only from Oceanic, the BioCube premium filter cartridges feature dual-action filtration. It features a woven pre-filter to clear debris and activated charcoal to remove odor and discoloration. Helps keep your aquarium water clear and healthy. For optimum efficiency, cartridges should be replaced every four-six weeks. Fits BioCube sizes 8, 14 and 29.