WaterYalan Aquarium Filter Media, Sponge for Fish Filter,11.8*15.7

Package Include: 3 x coarse foam(black), 3 x medium foam(white), 3 x fine foam(blue). Foam size: 17 inch x 11 inch. Simply cut holes in the desired position with scissors to fit most filter boxes. Cleans pond water of suspended debris, keeping efficient water flow with less clogging for long lasting filtration. Provides a breeding ground for beneficial bacteria, aiding biological filtration.

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Dimension: 11 Lx 10.25W x 2H, PPI: 40 black fine The open cell sponge has a much larger inner surface area for filtration capacity. This filter pad 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. The reticulated structure also provides better flow rate of water and less chance of clog. The size of pores is measure in pores per inch (PPI). The sponge with higher PPI has more pores in it.

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