I have a JBJ 45 that's been up and running for about 6 months. Live rock, sand, coral, and about 9 fish. I have a reef octopus hob skimmer. All in all everything is fine but I think the tanks filtration system leaves a little to be desired. I supplement the filtration by adding white filter material underneath the sponges in the filtration stacks. This works well but due to the size of the stacks begins to clog in about three days, and I just don't think this system flows that well. What would be a good way to improve this?