Tips of Blue dream curling

Im about 7 weeks into veg and my plants arent really growing right now and the tips are curling drastically. This is my fourth grow. Im growing in FFOF with a living soil added. I add no extra nutes and water 2 times a week and every other water i use compost teas. My light is a HLG 300 v2. Not other sighs that the plant had a problem besides the curling and slow growth. Temps are getting in the high 80s and my light was closer than i wanted, could that cause it?

Also they are due for a watering, but i wanted some opinions before i did thats why the fans are slightly drooping.

Excessive nitrogen.