My girlfriend's parents are coming to visit soonish, and I need to conceal my operation a little better because it's in a closet close to the kitchen. All I need to do for this is switch my lighting schedule from 11a-11p light, 11p-11a dark, to the other way around. i figure I can achieve this by adding an hour to each side each day so that it eventually gets there. The only problem is that will cause one cycle to have 13hrs and the other 12hrs. My question is this: Is it better to have it dark for one extra hour, or should I have it lighted for the extra hour?
During flowering, you want the dark period to always be as long or longer than the light period. 13hrs of darkness is perfectly fine. Some strains even flower more vigorously with more than 12hrs of darkness. HID lamps especially should have at least 12.5hrs of darkness because they continue to glow awhile after shutting off.