I have 2 (I think they are Aquaclear)802 powerheads in my tank with the filter baskets attached to them. Inside these baskets are tubes that I wrap batting material around(batting used for quilting). When they get dirty and full of gunk, I just throw the material out and put fresh on. I was wondering if I could possibly find sponges to use instead of the batting? Would that work? my main filter is my 350 mag., but I find using the baskets on the power heads really pick up the extra debris in my tank. They are pretty dirty and need to be changed about every couple of weeks. The batting is ok, except it tends to break up and get loose in the tank sometimes. I was hoping the sponges would be a better option?