Heat stress?any know?pictures

is this heat stress temps do get 89 but only for 3-4hrs then drop to 82-84 for rest of time.
it can't be nute burn btw due to haven't fed them nutes yet,well hope the picture helps.

Could be heat related.
Are u in soil or Hydro?
Whats the PH?
How often are u watering?

i have the same type of issue under a 400 watt halide, hydro ph 6.0, 1/2 strentgh nute, the roots look white and healthy, just some of tops look like picture

pic is dark but maybe overwatering?? check out
https://www.rollitup.org/general-marijuana-growing/1469-marijuana-plant-problems-cures.html that has some good pics to go by

whutsupevry1 said:

i have the same type of issue under a 400 watt halide, hydro ph 6.0, 1/2 strentgh nute, the roots look white and healthy, just some of tops look like picture

Click to expand...

I would start by bringing the PH down just a touch to 5.2-5.8.
I'm not saying that's the problem, but it could be, and it's the easiest thing to do so start there.
Then make sure your resevoir stays clean and temps in the res stay under 70F... Room temps in the mid 70's day and mid 60's at night accomplish this or a chiller is needed.
My guess when I first saw that leaf was root rot, but if ur roots look good then obviously that's not it. Just make sure u are getting plenty of oxygen to the roots and adjust the PH and u should be good.

Right on thanks for the response