http://www.swisstropicals.com/Poret Filter Foam.html

 

Thanks but I only need a six inch square... I don't really want to pay for what I won't use, and the minimum size that swisstropicals will sell is 13" square sheets. That's four times more than I need.

I want it for my canister filter. I need a six inch square so I can cut it into a six inch circle. I thought I would try to see if anyone had scrap they could sell me before I bought 13 x 13 sheets and tried to sell what I didn't use.

 

http://www.aquariumguys.com/rena-mech.html
http://www.aquariumguys.com/rainbowfilter.html