Is my plant Dying? too much heat?

Hey everyone. I have recently started flowering about 2 weeks ago indoors with a 90 watt led. They were originally outside.

I have just got back from holiday, all of my big leaves are crisp and yellow, had to take them off they are that dry. They haven't gained any height and have all turned yellow. What is the problem? Even new leaves are yellow and dry as if its burning. Light is about 1.2 foot away from the plants.
I have a little fan running inside then 1 metre by 1 metre by 1.6 metre tent.

Pics please..Temp, nutes,etc

whats ur ph at?

I would doubt that your problem is heat since LED lights dont produce very much.

Please see the above pictures. My LED Light gives off quite a bit of heat. Enough to increase the temperature to over 30 degrees during the day.

PH is being reduced down to about PH 6.0. Nutrients are currently not available, however this week I have used VEG nutes to try and pick it up a bit. Any advise is appreciated, thank you .

I just went through same thing, I believe? Heat problem, add vents and fans! Good luck!