Need some advice please

[no_bs]

We are starting our upgrade soon, with 2 DT's, 1 reef, 1 fowlr. Reef to be on the top. I want to stack them on top of each other. I would like to completly see the bottom tank. How would i go about making a stand like this? 1 st tank is 7'x2'x2'(reef), 2nd is 6'x2'x18"h. These are going in the wall so finishing is not needed. Ideas or links would be appreciated.

Thanks S