Yeh, that's interesting for the tenth time probably, and I've thought about something like that for my room that's coming together right now. I at first just thought I'd paint the floor a flat white to refect light back up, but then thought better off it. Also thought about how I was going to place my mylar. For me, I think it would be better to just go with a "normal" setup; I'll have enough to keep me busy with the plants.