Available only from Oceanic, BioCube premium filter cartridges feature dual-action filtration: a woven pre-filter to clear debris and activated charcoal to remove odor and discoloration. 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.
Rinse filter cartridge under cool tap water to remove excess dust.Remove the used filter cartridge at the back of the BioCube filter area by pulling straight up. Discard used filter cartridge.
Slide new cartridge straight down along the built-in guides in the filter area, making sure that the white media element faces the front of the filter.
Note: For optimum efficiency, cartridges should be replaced every four-six weeks.