I am wanting to build a double tank stand. The tank that will go on the bottom will be my 25 gallon aquarium. And on the top will be my 30 gallon terrarium/aquarium, because it weighs less and only is filled with about 7 gallons of water. My dilemma is that both of the tanks have the exact same dimensions except for the height. So I want to build a stand that can support both and that doesn't stick out on the sides of both the tanks. I also want to have a cabinet underneath where i can keep a filter, and a humidifier (for the terrarium on the top). Also I want some access space above the aquarium (which will be on the bottom) so I can clean the tank often. Also I want the stand to look really nice/classy. So does anyone have any genius ideas? Should I plywood? I don't really want to use 2x4's because they will stick out on the sides of both the tanks. However I could use the 2x4's to support just the bottom and hide it by some thin nicer looking wood on the outside. Thanks for the help in advance!