could this be heat stress

The bottom fan leaves seem to be curling down and there are yellow/white spot like marks on them and a couple higher up. Havnt feed her any nutes yet jus strait water shes a 17 day old BLueberry Dutch Passion clone under a 150w hps in FF ocean forest soil, temps when lights are on are normally arounf 75,76 but occasionally get as high as 85 for a couple hours a day. got a co2 boost goin on her any ideas on whats up wit her? any help/advice appreciated
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It is 17 days old. Might be a good idea to give it a 25% strength feeding and see what that does for it. How often are you watering it? Have you taken a PH reading on your water? My smaller flowering room while lights are on is a steady 82 degrees. My plants do fine in it. I wish it was lower, but it is, what it is.

watering about every 4 days really whenever moisture meter reads a little bit below moist water ph is about 6.5

seems ok, How about giving it a little food with the next watering?

yep, start hitting it with half strength veg nutes. Should be good 2 go. Drop that PH to something just below 6.

thanks alot guys appreciate it