Marineland Bio-Wheel Penguin Rite-Size B Filter Cartridge mechanically filters water through a pad of double thick poly-fiber, trapping debris and waste particles. Then the water flows through and is chemically filtered through Black Diamond Premium Activated Carbon. Cartridge is pre-assembled and made with a patented ribbed backing to ensure even distribution of activated carbon which also allows maximum water-to-carbon contact for crystal clear and clean water.

Condition:
Used Like New