Is this heat stress or burn from lights or temps?

temps were pretty high around 90- 95 degrees I think its burn from temps or stress

I had a high-temps issue once (upper 90s+) and the leaves took on a dry, bronzy sheen for a while before drying up completely into a crispy claw. It was horrible! But that was before the stretch. New growth was healthy when I fixed the problem and after a few weeks in flowering those leaves were far enough down on the plant that I removed them.

Dude, what ya' growing in, what ya' growing under, how old are they, and how ya' water them (i.e. hydro, or weekly can-o-water,) you nuting them? You growing in a soil with nutes, or you growing in something that needs nutes?

You gotta' include a bit more detail. No, that doesn't look like heat or heat stress. Nor light burn. It looks like an issue you're having with nutes.

Im using general organics nutrients line just started flower gave them full dose soil is foxfarm ocean forest 600 watt hps I give them nutes every watering haven't had any problems with them in veg I water every 4 days maybe its from the flowering nutes I don't know the other look fine