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Aquarium Pumps & Filters - Wave Point Filter Foam Sponges, Bio Sponge Filter Media Pad, Cut-to-Size Foam for Aquarium Fish Tank Aquarium Sponge Filter Foam 17.7

Features

Dimension: 17.7" L x 6" W x 2". PPI: 40 black fine OR PPI: 30 black medium OR PPI: 25 blue coarse.

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. More pores means larger filtration capacity but with less water flow through rate and needs to be cleaned more often. It is recommended to use combination of sponge with difference PPI to get the best result.

Disclosure: I get commissions for purchases made through links in this website