ViaAqua Aquarium Filter Sponge Open Cell Foam Sheet Bio Sponge Filter Media Pad HMF Fish Tank Sump Divider 12 x 12 x 2 (Blue, 20PPI)

Provides both mechanical and biological filtration. 20PPI Filter Sponge traps large debris efficiently, and can be used again after cleaning.

AQUANEAT Aquarium Filter Sponge Open Cell Foam Sheet Bio Sponge Filter Media Pad HMF Fish Tank Sump Divider 11 x 10.25 x 2/ 23 x 12.25 x 2 (11 Lx

Aquaneat Aquarium Bio Sponge Foam Filter Media Pad for Fish Tank Sump Pond 17 inch

3 Pieces Aquarium Sponge Filter Bio Sponge Filter Egypt

Dimension: 23 Lx 12.25W x 2H, PPI: 20 blue coarse The open cell sponge has a much larger inner surface area for filtration capacity. This filter

AQUANEAT Aquarium Filter Sponge Open Cell Foam Sheet Bio Sponge Filter Media Pad HMF Fish Tank Sump Divider (23 Lx 12.25 W x 2 H, Blue)

AQUANEAT Aquarium Filter Sponge Open Cell Foam Sheet Bio Sponge Filter Media Pad HMF Fish Tank Sump Divider 11 x 10.25 x 2/ 23 x 12.25 x 2 (11 Lx

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.

Aquaneat Aquarium Filter Sponge Open Cell Foam Sheet Bio Sponge Filter Media Pad HMF Fish Tank Sump Divider (11 LX 10.25 W x 2 H, Blue)

Aquarium & Fish Tank Foam Filter Bio Sponges, Filter Cartridge Insert, Filter Media Pad, Cut-to-Size Foam for Aquarium, Fish Tank, Pond Filter, Open Cell Foam Sheet, Filter Media Sponge

Dimension: 23.6 Lx 17.7W x 2H; PPI: 20 Blue Pad Offers more surface area for filtration. Can be cut to fit and used as a pre-filter for any

Wave Point Aquarium Filter Sponge, Biological and Mechanical Aquarium Filter Media Sponge Pad, Open Cell Foam Sheet Cut-to-Fit for Fish Tank Sump

AFA Aquarium Filter Media Sponge Pad, Fish Tank Bio Open Cell Coarse Foam Block Foam Pre Filter Sponge Material (12 x 36 x 1 25ppi)