yeah most people dont even think about that kind of stuff, its great that you guys do though!! wouldn't that suck if your living room ended up in your basement!!!! i only keep a 55g but i do like to load it up with rocks. I just got done building a new stand and when i built the frame, i did it like a framer would frame a house. i laid two 2x4's parallel to each other on the flat(4") face to make up the 48" length of the tank, and then i miter-cut the two side (13") pieces, laid the same way, screwed and glued, then i sistered 2, 2x4's together for all 4 corners(making sure each on was sitting on both the 48" and 13" piece. i just ran a single 2x4 up the middle, 4" side facing me on the outside of my little sill, and scrap 3x3(ran outta lumbah) in the rear. then i repeated the bottom onto the top. anyway my whole thinking was that if i evenly distributed the weight, building it just like a house, everybody was that much better off! it is of course on a load bearing wall so its probably all overkill but what the heck!