Black sponge for prefiltering?

mhmh

AC Members
Sep 19, 2002
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The Poconos of PA
home.nyc.rr.com
I'm thinking of converting my UGF to RUGF, by reversing the flow of my 802 powerheads. (See the thread I started in General Freshwater.) I want to prefilter with a black sponge; where can I get one? The LFS has white, yellow and blue filter sponges, but not black. Could I use the type of sponge they use for "stipple" painting?
 
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