Heres some pics of my sump........... I suppose I should take this oppertunity to tell you about my tank. I have an urchin pro skimmer with a mag 5 pump, My return pump is a mag 7, but I'm going to add a sea swril in each corner, I think that will be better than my home depot special. My overflow is 600 gph if i remember right. I was thinking of adding one more of these overflows and pumps for increased flow because I know I don't have near enough. My lights are VHO's but just picked up two 400watt hqi halides though:badgrin:. I'm just waiting on the hood to be built; then it's on........