Weird Fringed Taco leaves

Ok so growing in Coco with perlite. Ph is around 6, using foxfarms grow big and bloom. Full strength, already flushed and nothing changed. So I fed a lil and seems it may have gotten a bit worse. Running humidifier at times, RH is around 50% and temps mid 70's. Intake and exhaust fans going, but never seen this before.. any ideas? +rep for comments!

doesnt looks so bad ... my leaves do that from time to time....
Maybe a bit of a bad reaction from the nutes...
I notices also that that happens when clones loose vigger ... but i dont know if theyre clones....
clones can go threw weird fazes.... u probly should put that in a bigger pot... that could be an issue...

That is a magnesium deficiency. Find a supplement with a higher mag level then 0.5 and it will be better in about 2 days. And it looks pretty dry you should water that when ever it dosnt feel moist to touch when you put your finger a inch into the soil

Over watering + heat stress

err deficiency looks immobile... your probably underfeeding it, and on top of that flushing made it worse probably. i'd use 1/2 strength nutes and water it... its probably calcium deficiency

one point for heat stress.....

I find myself linking to Uncle Ben again, but this one is a great read (AND related to your problems, IMHO): https://www.rollitup.org/marijuana-plant-problems/150004-plant-moisture-stress-symptoms-solutions.html

id say heat stress maybe lil lockout too....but id lean heavier towards heat

more heat stress than lockout to me...
Some strains will taco naturally tho....
maybe too much nitrogen...just a guesss..

Thanks for all the responses, and ya it had to of been lockout. Because I started making sure I watered thoroughly enough for adaquate drainage and they are all looking beautiful now.