Heat stress or nute burn?

Hey guys, got all of these plants suffering something that I've never experienced, all of them are crispy and don't look too happy.

All about 8 weeks old, in FF soil and the last nutes I used prior to them looking like this (about a week ago, had a non-nuted watering 3 days ago) was Botanicare pro blend Grow and Liquid Karma, all about normal strength doses.

It has been hotter than shit here in CA, I live a block from the beach and it still has been around 88-90 and in the garage where these are is around 100.

Any help and input is greatly appreciated.

- Slip

When my plants have been really stressed from heat, they wilt and the leaves droop way down. to me, that looks like nute burn. I don't know how long youve been using ocean forest or anything so i dont want to criticize your methods, but i know that when using that soil, you have to be very careful with the nutes you give your plants. I use ffof also and I didnt give my plants anything but water for the first month and they are doing great (I also live in CA, it has been very hot, especially today). I'm not an expert or anything but thats my input, hope it helps, and i hope your ladies get better soon.
peace

Did you just start using those nutes?

i vote nute burn

ive always used half strength with botanicare esp. with addatives

Actually, Iv'e been using the nutes for a while but I did "eyeball" them the last time as it was late & I was tired........that'll teach me.

Should I flush em or just let them recover & use no nutes till they get better?

Thanks guys, +rep

Since you've been using the nutes for a while i think you will be ok just go off the nutes for a few waterings until they start to look better. keep in mind that the parts of the leaves that turned yellow or brown or whatever may not recover, but as long as all of your new growth is looking healthy you can tell they are getting better.
good luck

def nute burn friend, if you notice usually burn starts on the outside of the leaves and works its way in from there, thats usually a sure sign of to many nutrients, dial it back a bit and youll be fine