Toxicity or deficiency?

I am not sure what is going on here. On a few of my babies, the veins on the fan leaves 1st turned red, then the leaves started turning a dark red and then brown.
I am guessing a nitrogen toxicity, or some sort of a deficiency. Unfortunately my phone won't allow me to zoom in on the charts to diagnose it myself.
Any help or opinions will be appreciated.

How close are you to being done? A lot of lower and interior fan leaves can go all funky in final two weeks. Hoping this is you issue! Doesn't look like nitrogen toxicity to me. What is your nutrient program?

I am on day 45 of flowering.
They are in the fox farm soil, and I am feeding them the grow big, bloom, and tiger's blood, every other watering.

Bugeye said:

How close are you to being done? A lot of lower and interior fan leaves can go all funky in final two weeks. Hoping this is you issue! Doesn't look like nitrogen toxicity to me. What is your nutrient program?

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Thank you so much for replying. I just posted my nutrient schedule above.

Do you know your ppm on those feedings? Seriously doubt they are deficient on anything, maybe lockout from over feeding of something but more likely the plant is just shutting down fan leaves in late flowering. Fox farm feeding schedule is notoriously too high in ppm so a flush with two weeks to go may be all you should do at this point.

Bugeye said:

Do you know your ppm on those feedings? Seriously doubt they are deficient on anything, maybe lockout from over feeding of something but more likely the plant is just shutting down fan leaves in late flowering. Fox farm feeding schedule is notoriously too high in ppm so a flush with two weeks to go may be all you should do at this point.

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Unfortunately I don't know the ppm. I flushed them 2 days ago and will feed them again tomorrow.
I will just wait to see how they react.

Thanks again for your help!