Leaf deficiency? Help please!!

Hi guys

Few of my leaves are showing signs of problems, i just cant figure out which nutrient im low on or over doing?

Have attached a picture. Thanks people!

I see heat stress, nute burn and 3 leaves that should have been left on for a pic of the entire plant.

How about the medium you're using and how you have used nutrients. How old was the plant, lights, the standard stuff.

Agreed, definitely nute burn -- not saying it doesn't have heat stress, but they canoe/taco fairly good under it from what I've seen