I know, not a bad problem to have. But I'm out of room under my lights after potting up tomatoes. Can I harden them off over a week or so and then put them in the portable greenhouse (shelves with a plastic cover)as long as I prevent the interior from getting too hot? Do I need to bring them inside at night? The weather is all over the place....80/65 one day.....60/40 the next....crazy.