Nute burn and heat stress??

I believe I have heat stress due to the curvature of the leaves and the bleaching on the top fan leaves, but I think I may have nute burn or something too... Check out the pics, hard to see because of the light of the plants and dying out and one has turned yellow. Please tell me what you think, thanks.

heat and maybe some pH issues, if it is a nute burn, not sure which one sorry

Yea, looks like heat and maybe ph problems. That fourth pic looks like calcium deficiency.