So if you don’t know what negative dif means cuz your a new grower like me, it just means that your night temps are higher than day temps. Any of you seasoned growers here have some insight to growing like this ? I ask because at the moment I’m on 12/12 with lights on during the night hours. With lights on I am able to leave my tent open so I can get better circulation and keep the temps down. During lights off I close up the tent because it’s in side of my walk in closet n well woman can’t ever decide what to wear so they need their closet 
as of right now my lights on temps sit around 76 and lights off around 80. Did a lil research for my self just seeing if anyone has more insight on this topic.
Ok well I spoke too soon about this topic. Read some more and seems it’s only beneficial to use this method in first 3 weeks of flower for keeping the the plant from stretching so much and keeping the nodes closer together to help produce denser buds!!