Marineland® Penguin 150B Bio-Wheel Assembly - Biological Aquarium Filter Media

Instructions:. Do not replace a Bio-Wheel unless it is damaged since beneficial bacteria live on it.

100B (20 gallon aquarium) = 5 in L x 5 in W x 7.5 in H

150B (30 gallon aquarium) = 8 in L x 5 in W x 6.75 in H

200B (50 gallon aquarium) = 9 in L x 5.25 in W x 7.5 in H

350B (75 gallon aquarium) = 15 in L x 5.25 in W x 7.25 in H