ive looked and cant find much besides moving them indoors for night, is there a good way to give them more dark time without moving the plant inside? do i need some sort of a vent for airflow? would it hurt the plant? can you do it? any thoughts and knowledge would be greatly appreciated... they might be getting a little big for my comfort!!! one is about 4 ft tall and the other is real close to that and there is a lot of time here in cali until the natural light cycle changes.