Ok. I had an idea for a 3-way type set up. I wanted to set up a reef tank with a fuge/frag tank in the sump. I have always wanted to use a rubbermaid stock tank for a frag set up (http://www.tractorsupply.com/rubberm...pacity-2229901). I came up with this. Would it work if I had my DT on a stand being the highest of the 3. Water from that tank would then just drain into the rubbermaid stock tank (to the side of the DT) which will be elevated some making it the 2nd tallest. Water from that would drain into a sump in the DTs stand. In the sump I would put the return pump (to the DT), skimmer and a fuge. I want it this way because it will keep the mess of a skimmer, pump and fuge out of the frag tub. My main concern is if power goes out. Would it overflow the sump (3rd level). I wanted to get some opinions before I put more thought into it. Thanks!!!