I changed my sump design and am now using one of the little drawer organizers to hold filter pads. the water trickles through two drawers and then into the open water of the sump (where there is K2). I would like to find something that I can use over and over rather than constantly throwing away the filter pads. I was using the Eshopps large square foam block, but it was too small and clogged up too quickly (the pad was too small for the amount of waste, the pore size was good). Now that I have the trickle drawers, I am hoping to find something similar that I could cut to fit the drawers. Has anyone found a good option that is reusable?