Coralife BioCube PC/LED Fish TankThe Coralife BioCube features high-quality components for saltwater or freshwater setups. Featuring new supplemental LED replaceable bars and expansion slots to add the naturally occuring shimmer effect of the ocean. Complete filtration system features dual filter intakes to draw aquarium water for improved water circulation and filtration. Replaceable 2-stage filter cartridge provides easy-to-maintain mechanical and chemical filtration. Includes biological media and return pump.