Instead of getting a store bought stand, which I was going to do first but remembered they aren't all very good quality for holding up aquariums, I decided I'd make my own again. I was going to build one out of 2x4s like I did with my 29, but came across an article about using cement blocks and 2x4s and plywood sheets as a super-sturdy aquarium stand! So I think this time around I'll try that and see how it goes I like the look of spray-painted black cement blocks under a black trim aquarium, not to mention I'll be using black sand and a black background. I think it would look nice. My only question so far is, do I need a styrofoam sheet underneath the tank? Here's what I planned to do so you guys know - 3 stacks of 3 cement blocks, one stack on each end the third in the middle 1 plywood sheet between the stacks for a shelf three 2x4s across the top of the cement blocks plywood sheet on top of 2x4s Do you think I should add a foam sheet to be safe? I've read varying threads about people who use it and don't use it, but I'm still unsure.