Need Help Please! Need Some Advice!

Ok first timer so go easy. they were looking great till i saw a little something and i decided to flush them out and this is what it looks like HELP!!!!
Flushed them May 19 veg room
flushed followering room

Wow man that looks like the ph is a little out of whack. It could be nute burn as well and or both.

I usually keep the ph at 5.5 to 6.5 no higher or lower??

looks like heat stress if you ask me...

ya how close do ypu have your lights to them things? pull your lights back. notice its only at the top of the plant? lights to close i think.

i also see signs of nitrogen claw. may want to flush again after you raise your lights a bit.

Wow guys not going good now I'm starting to see the claw on other plants what do I do???

My lights in flowering are at 20in
My lights in veg 12in

what type of light are you using? size? watt? grow space? ventilation? looks to me though like leaves are burnt, and has nute burn due to to much nitrogen.