Try and design you system so that you aren't using filter floss, pads or socks. I hate having to constantly change and clean my socks. But I need them for microbubble control because of my poorly designed overflow. RC seems to be down at the moment but there is a good thread on there called 'show me your rubbermaid sumps'. I'll try to find it and post a link for you later when they're running again.
This is what I did at first with mine. I had everything inside and I ran two tanks off of it. However I more recently changed it to this by moving everything out or to the side so that I could grow coral in there instead. I always seem to have just fed my tank every time I take a picture. Thats why the foam head in the skimmer has crashed.
