Bio-Wheel assembly replacement parts for Penguin filters. Bio-Wheel assembly replacement parts for Penguin filters. Do not replace a Bio-Wheel unless it is damaged since beneficial bacteria live on it. Discoloration of pleated Bio-Wheel material is normal and desirable. Irregular rotation is also normal. A Bio-Wheel rotating at any speed is working to eliminate toxic ammonia and nitrite.
100B (20 gallon aquarium) = 5″ L x 5″ W x 7.5″ H
150B (30 gallon aquarium) = 8″ L x 5″ W x 6.75″ H
200B (50 gallon aquarium) = 9″ L x 5.25″ W x 7.5″ H
350B (75 gallon aquarium) = 15″ L x 5.25″ W x 7.25″ H
