The Coralife BioCube Filter Cartridge includes 2 replacement cartridges that fit the BioCube 8, 14, 29, and HQI. These cartridges help keep your aquarium water crystal clear and removes discoloration and nasty odors!

• Keeps water crystal clear
• Removes odors and discoloration
• Easy to remove and change once a month

It is recommended that cartridges be changed every 4 to 6 weeks.

Note: Formerly called Oceanic BioCube Original Replacement Filter Cartridges, Model #82105.