AndyP Posted December 6, 2021 Share Posted December 6, 2021 I'm looking at the listing for the pr-filter sponge and the listings all sat 20-25 PPI. I'm trying to get something coarser than the sponge inside the Aquaclear 110 I am using. The Internet says the Aquaclear sponge is 20 ppi. The intake sponges seem a lot coarser than the Aquaclear sponges. Link to comment Share on other sites More sharing options...
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