Marineland Bio-Wheel Assembly – Replacement Part for Penguin Filters

The Marineland Bio-Wheel Assembly is the official replacement part for Penguin Power Filters. The Bio-Wheel is the rotating cylinder that makes Penguin filters unique: as water flows through, the wheel spins and provides a large surface area for beneficial bacteria to grow. These bacteria perform biological filtration, breaking down harmful waste like ammonia and nitrite into safer compounds that keep your fish healthy.

Over time, a Bio-Wheel can wear out, get damaged, or stop spinning properly. Replacing it with a genuine Marineland part restores your filter’s full performance and ensures your aquarium continues to benefit from strong biological filtration.

👉 In short: a vital replacement part that keeps your Penguin filter running as intended and helps maintain a stable, healthy environment for your fish.