Aquarium Bio Sponge Filter Media Pad Open Cell Foam Cut-To-Fit Matten Filter Fis
1 Piece of Aquarium Pond Coarse Filter Sponge. The sponge with higher PPI has more pores in it. Can be cut to fit and used as a pre-filter for any aquarium or pond filter, sump, wet/dry, canister, power filter etc. or your HMF DIY project.