LTWHOME Compatible Filter Foams Replacement for Ciano SM / CF20 / CF40 Aquarium Filter (Pack of 12) Acts as biological housing for

Acts as biological housing for aerobic cultures will improve water quality

If your filter is Approximate size of these circle shaped filters: 6" diameter

Any use of the Penn Plax brand name or model designation for this product is made solely for purposes of demonstrating compatibility

Packing include: 12pcs fine foam filter

LTWHOME Compatible Filter Foams Replacement for Ciano SM / CF20 / CF40 Aquarium Filter (Pack of 12) Acts as biological housing forPack include: 12pcs. Custom designed and manufactured for Ciano Aquarium Filters SMALL CF20 CF40. Trap large particles and debris keeping your aquarium clean and clear. Provide efficient water flow with less clogging for long lasting filtration. Change these sponge foams regularly to keep optimal filter performance.