Edges of leaves curling up? Help please

I'm growing an AK47 Auto and she's about 2 weeks along. I noticed the edges of some of the leaves are starting to curl up. It looks like signs of heat stress, but my 45W LED produces VERY little heat and the temperature in my grow room never gets above 80 degrees. What other problems could be happening here? Or is it definitely heat stress in which case what should i do?

Thanks for the help

It's hard to see you have to look close

I wouldn't mind if i was u., Unless it goes to the Xtreme like taco leaves., Keep ur rh like around 55 and keep ur rt around 75-85. U should be fine

I get that from time to time. IMO nothing to worry about at the moment, look good for 2 weeks.