Why don't you go for a 1 ft cube instead? HOB filter, a PAR38 for lighting, can even consider getting the tank from East Ocean Aquatic... optic white glass.
WAH the prices are very competitive! Might go for the 20cm cube and blast it with a Par38 or high output LED, will get a nano wave-maker, daily 25% water change.
Any idea whether the Hydro nano wm produces a lot of heat?
So tempting but how to convince gf to let me start? hmm...