Could this be nutrient burn? My ppm run off says 1080 and it’s in 6th week of veg. Temperature inside the grow tent is 80• I give it 6.5

Ppm seems a bit high for veg so I would tone that down if you can. Maybe someone else will disagree but I doubt it. I wouldn’t go over 600-800 in veg depending on your nutrient. synthetic nutes?

Your plants look good and it doesn't appear to be anything major. No, not nutrient burn. Some of the markings look like over-watering. Here's more info: https://www.mrgrowit.com/post/over-watering-cannabis-plants May also be damage from equipment being too close like I mentioned in the other thread you opened.