drying shriveling twisting leaves

hey all ive got a few plant 4 weeks into flower as of this morning one plant most of the leaves the fans and leaves around the buds are shrivling and twisting green healthy leves, yellow leaves all of em it kinda looks like a clone that has been removed from the dome before its time and the leaves start to dry up. im using a 1000w hps temps are day 88 humidity 20% night 65 humidity 35% ph around 6 ive never had this problem before and use all same amount of nutes as i always have

could be heat stress, 88 seems way to hot and 20% humidity is low. you should try to keep it around 75 and 40%

Looks like heat stress to me too.

I'll third that vote.

I,ll go heat..move em around in the room and see if the plant likes another spot.

im just curious as to why would only 1 plant out of 6 be like this tho all the rest look amazing very healthy

Too little light (or not close enough or wrong spectrum or . . ) combined with no air flow. Nute problems seem very likely considering . . . ..

i have a box fan and a small fan running plus an intake fan its in a closet also its 1000w hps so its got more than enough light, air circulation and what not

also i should note ive been growing wfine with the same conditions for past 2 years and have never had this problem

today most of the leaves have fallen off and the buds feel a lil crispy and all the hairs are red and the trichs are mostly cloudy a few amber and few clear . Im at day 37 today and its 50-55 day starin

*strain (edit wont work lol)

Same strain? Did you use alot of bloom nutes as over recommmended? Can't see the pot size..rootbound is another. Thinking flush too.