Help With Flowering Plants

I have two plants getting close to be harvested but I am having two different issues with them. They are both in soil under the same 1000 HPS light. Temp is between 70-80 degrees.
I have attached the two images of the different problems. Please help so I can correct the problem and harvest still.

Looks like heat stress...Tops are probably to close to the light...

What he said could definately be the cause ^^^^^. Also, because you said you are close to harvest, sometimes you will see leaves start to die off because they plant is directing all of it's nutes to the flowers. This is common late in the flowering stage and part of the plant's normal life cycle.