That's a great idea about the 2x4's glued to the plywood. I'll revise my stand plans to include that now. It'll make the setup easier when I have to lift the 700+lb tank and move onto the standI've used several cinder block stands.
3) do not stack cinder blocks more than 3 high.
On that note, why not more than 3 high? I was planning on 4 high, as I have to fit a 125 underneath
thanks