Just built this 2 tank stand for qt and hospital tanks. There is no cross brace in the back, didn't think I would need one. Putting a 20gal on top and a 10 or 20 on the bottom. Inside legs/braces are 2x4's the rest is made of 1 1/2 x 3 1/2 poplar which is a hard wood so should hold up. Would like some feedback on if you think stand will be fine without a cross brace in back. I can put all my weight on it and it doesn't move a inch







