Ive given that a thought more than once. I just added the anubias to the driftwood on the left. Also added 7 more trimmings of phothos "spelling". I really wanna keep it a bare bottom, but have given thought to a white sandy substrate. My mbu passed away and this was his growout, I just cant seem to find the fish I want to stock this with. Maybe once the tanks plants are positioned properly and the hydroponics portion is complete ill have a better idea of what to put in it.