So I'm planning on making a stand but using only 2x4's. My tank is a Mini-L with the dimensions: 45cmx27cmx30cm (approx:18"x10.5"x12"). My question is: without adding a plywood top, would the tank be safely supported with just the outer edges of the stand? Also, what's the highest I can safely make the stand if the stand were to be made close to 18"W x 10.5"D?
I do not know this specific tank, but if it has a rim or feet you should only need support on the edges/feet, if it is flat on the bottom i would fully support the bottom but use a piece of leather or something to put under the tank to give it a bit of cushion to keep it from getting scratched and so on