I do just the reverse of what you are doing. I put my plants out during the day and bring them in at night. My plant are 54 days old, 3 feet tall and flowering nicely. I used flourescents when I bring them indoors, but now that I am on 12/12, all I have to do is put them out for 12 hours each day and bring them in at night. If you put them on 18/6 light, then you can force them to flower whenever you want. Airace