It's an eshoppes wd-300cs wet dry system. From the output it goes into one of two chambers which have a thin wool type material which then filters down into the bioballs. THe problem is after a few days the wool pads must clog to the point where the water cannot drain through it quicker than the water is supplied. The water hasn't run over the edge as there is 1" of additional space above the foam pad but the fact that it is clogging bothers me. It seems to be mostly algae in there I'm guessing but is there a way I can resolve this rather than cleaning it ever week? Perhaps a different material that flows better and doesn't clog as easily? I know there is a fine line between flow and filtration. There is about 1" of space I have to occupy if need be. For reference the pads are in the black boxes and the black boxes have holes drilled in the bottom of them.