Hey all, I want to order my new tanks this week but really need some ideas. I am looking at a 80L x 30W x 24T. I have made up my mind to order something like this. http://www.midwestcustomaquariums.com/tankbuildingprocess.html I was going to go with 3 holes for 3 400W MH lights. I was thinking of having 2 overflows. What should I do for returns? These are going to be in the wall tanks so only the front will be viewable. Should I pump the return into the sides of the tanks?