*May exclude certain brands.
**May not be combined with any other offer.
Code expires 12/13/13
Replacement Bio-Wheel for Penguin 125B, 170B, 330B. Marineland Bio-Wheel should not be replaced unless damaged.
The water flow from your filter drives the Bio-Wheel. As the Bio-Wheel rotates, beneficial bacteria grow and thrive on its super dense surface. As water flows, the Bio-Wheel eliminates ammonia and nitrite on