Are those shelves from Target? I have a 20L I am waiting to set up, and a stand is one of the things I'm waiting on. I have some wire frame shelves from target that look identical to the shelves in your picture, I thought they wouldn't support that much weight though.
Edit: My bad! I just saw a comment I skipped over saying they were from Home Depot. Thanks for giving me an idea for a stand!
Their site isn't great looking but my order came through fine and was really really well packaged. Best deal I'm aware of for this tank.
Do note that the canopy is just 1 piece of glass, No room for HOB filters or anything. However I found you can use 2 of the dividers on the top and that will leave you about 4" of open space, so you could fit in a tiny filter. I'm hoping I can fit a little Azoo Mignon filter in there.