hey everyone,I have a situation. I have 3 beautiful skunk #1, 4 weeks in just flipped to flowering pistils everywhere. there on 20/4 Ilive in eastcoast and its cold at night low 20's anway I noticed that the new leaf sets on top are kinka curling at tips. is this cause of the cold durin the 4 hrs. or just its way of flowerin. im debating to go to 24 straight tto keep the heat, will this shock the ladies. please if anybody knows if this is normal or I have a problem. Oh yea the temp. goes from 72 /66 when lights are off, im at a good 77/80 on reg, will goin from 20/4 to 24 straight gonna shock my babyies.need some knowledge please!!!!!!!!!!!!!!!!any help would be greatly appecitive. thx