Question on leaf curling

Thank you to all who looked at this question. I use a non-contact thermometer to monitor the temperature of the plant at the leaf level. I test top, and lower levels. Highest leaf temp I've seen is 75.5 F. The light itself at the driver is 80. I have a large exhaust/filter running plus an intake fan, both on at 24 hours a day. Nothing seems to have changed with Lucy since I posted this question, except she's gotten fatter. She's played some interesting tricks throughout her grow, so I tend to react really quickly the moment I notice something. (First grow jitters.) I'm currently giving her 35 DLI, I'm going to up that next week as I believe she is getting near the end.

Heat stress...Raise your light a little or reduce intensity to lower heat produced but at the cost of reduced spectrum. Bring in colder air from outdoors or air conditioning. Although, looking at your diary you are not that far away from finishing. I would increase you humidity slightly so the leaves get a reprieve of moisture. I wish you luck

The curled leaves are from heat. I would use a nute with P and K in for the remainder of the flower.