I have recently noticed a lot more ditritius building up in my sump behind the sponge that seperates the two complartments. The first compartment is the one filling up with, what is almost turning into mud, while the next, which contains the skimmer and the return pump is fairly clean. I'm worried about this mud building up and creating a problem later on by releasing nutrients, is there any way to clean this out? If I remove the sponge that holds the mud back, will it just get skimmed out, or will it just end up back in the tank? What is the bets way to handle this situation?