easy solution go out to your electricity meter drill a little hole in the bottom of the glass covering and stick a small stick in the turning wheels hole...no more high bill
why dont you make a chimney like thing on the grow box by drilling a large hole in the top and have a metal tube going up outside and just put a small fan towards the bottom to get the air moving
i closed the door while i was in there once it was kind of dark but the growspace has a blanket over it so im sure no lights getting in but do you think i should start veg again to let it mature more? heres a pic of it