Marineland Bio-Wheel Assembly Replacement is for Eclipse Model 2 & Emperor 280B & 400B Filters. As the Bio-Wheel rotates, beneficial bacteria grow and thrive on its super dense surface. As water flows, the bacteria eliminate ammonia and nitrite on contact. Marineland Bio-Wheel should not be replaced unless damaged.
Features:
- Irregular rotation of the Bio-Wheel is also normal
- Discoloration of pleated Bio-Wheel material is normal and desirable
- A Bio-Wheel rotating at any speed is working to eliminate toxic ammonia and nitrite.
Selection of the store only applies in the cart/checkout.
