What is going on with my plant!

This just happened in the last couple days. it's only really happening to one of my plants. The ph is always balanced before feeding. I have never seen this before.

Looks like heat damage.

yeah to close to light. what kind of light is she under and how far away?

Under 1000w hps but ballast set at 600. About 10 inches from plant top.
Heat stress eh? Will the cola recover?
The room is too hot I think... I just dialed them back to 400.
Getting to about 32ish half way through 12 hour cycle.

Don't think the cola will recover. 10 inches is too close, try to bend them down or move the light higher.

fried green tomatoes.........it will not bounce back

That's that hippie strain huh? Nice!!!

It got cooked, trim off the dead parts, the rest will grow. Get a fan blowing directly on your bulb if you don't have a cooltube. Better ventilation in the whole room would also help if you're room is over 30 degrees.

They are running through 8" cooltubes exhausting directly outside...
That is why I thought I could have them closer to the light to penetrate deeper into the canopy.
Ya summer is tricky here it gets to about 25-30 during the day, I even run them from 8pm-8am to try to get lower temps.
I will take your advice and trim off the dead parts and go from there. Luckily it's only one of the plants.