i have my walls and floor lined with the white/black plastic called panda film .i found a 50ft by 4ft roll of mylar from htg for $32 shipped would it be worth me putting a 4 ft piece about a foot from the floor on all the walls? the mylar would cover from the bucket to the top of the plants on 3 walls.not sure how to do the forth yet maybe i can tape it to the panda film.