Skip the bags. Go with 12 hours darkness. I have played around with cycles greater then 24 hours. (16 on 12 off) and haven't noticed any advantage. The timers are hard to find and it is just a hassle. I'm not sure where you heard 6 hours darkness, (and I assume 18 hours daylight), but indicas and sativas will not produce flowers with that photoperiod.

Good luck
Sativagrowin Reviewed by Sativagrowin on . Dark period question When its time for the plant to go into darkness, I hear different reports of 6 hrs to 12 hrs. As my grow room is a wardrobe, I was wondering, for the dark period, could I just cover plant with Black sack, with pinholes for air for 6 hrs? this would be so handy for me if its possible. Rasta Rating: 5