I've been dealing with a lot of heat issues. I've tried different things and what seems to have helped is more fans in the tent, and I put a bucket of ice in daily. The video is a time-lapse from week 3 and part of four. Jenny had some slight leaf cupping most likely due to some heat stress which I've since corrected. I also come to realize in week 4 I was underwatering/feeding my plants. Raising the lights, adding fans, and daily ice buckets have made for really great looking plants in the tent. Once in a while, I have dropped some dry ice in and it seems to give the plants a little boost. It may be in my head, but the temp drop, the co2 release, and humidity bump seem to have helped. The only type of LST I have done is put a fan in to blow the plants around, and I have tucked some bigger leaves under smaller ones to expose the new growth or flowering site to more light. All in all, I have been hands-off with my plants. I do rotate them and shift them around the tent a lot.