Maintain cleaner, clearer aquarium water with the Pro Clear 5" Cylinder Sponge. This replacement mechanical filter media sponge traps unsightly particles and coarse debris from the aquarium water column to provide effective mechanical filtration but is porous enough for desirable copepods to pass through and to allow beneficial bacteria to colonize it for supplemental biological filtration. To extend practical use, gently rinse your dirty Pro Clear 5" Cylinder Sponge in aquarium water to remove accumulated debris while preserving beneficial bacteria. Replace old or worn Cylinder Sponges routinely to help ensure best performance.

The Pro Clear 5" Cylinder Sponge fits Pro Clear Overflow Prefilter Boxes and the Pro Clear Sock Canister.