I'm building a stand for a glass tank, and I'm wondering if I should put anything underneath the tank. The surface isn't completely smooth, the tank will be sitting on a frame made of 2x4 and part of it will be on top of the plywood paneling (which is 1/4" plywood on the front and two sheets of 1/4" plywood on the sides because I built the frame too small
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Should I lay out some 1/4" plywood on top? Maybe just some 1/4" styrofoam? 1/8" steel? 1/16" steel on top of 1/4" styrofoam?
The trim around the top of the stand is designed to cover the bottom frame of the aquarium so whatever it is, it needs to be less than 1/4".

Should I lay out some 1/4" plywood on top? Maybe just some 1/4" styrofoam? 1/8" steel? 1/16" steel on top of 1/4" styrofoam?
The trim around the top of the stand is designed to cover the bottom frame of the aquarium so whatever it is, it needs to be less than 1/4".