Clawing leafs and pink edges/tips

The brown spots are part of the deficiancy, but its tough to tell which as there could easily be multiple.

I wish that were the case.. a deficiency cannot spread to a nearby plant..
The brown spots started on one leaf and have spread to the leafs around it. Including the leafs on the plant next to it.
A few random spots here or there. But the majority of the brown spots have all spread from one location

All your plants are in the same medium, and have been fed the same things correct?

A deficiency can happen to all the plants if they are all having the same issue. Most likely it started on one of the plants with the most direct lighting and intense growth. Then the surrounding plants started to need more food but weren't getting it so they started to have the same issue. It's not that it's spreading from plant to plant, it's just expanding through your garden as the plants run out of nutes.

Hell maybe I'm wrong, but all the problems seem to stem from the plants being hungry, and you being afraid to feed them. Your soil only had enough nutes to get those plants through veg. Coco has nothing in it so now your plants are trying their hardest to make some nice buds for you, and your starving them. So these deficiencies keep expanding.

I'm not suggesting blasting them with nutes, just that they are hungry and these problems can all stem from that one issue.

I mean, you very well may be right, and I really really hope you are man, but like it started on one leaf, that one leaf started getting worse, and then spots started appearing on the leafs it was touching, and then the leafs nearby, and then to the leafs on the plant next to it that were touching. All the brown spots are spreading outward from one point. There is a few random spots on random leafs, but almost all of them have absolutely no spots except for the few randoms (like 5 leads out of hundreds) and the seriously affected ones.
Man I pray its just a defiency and not a fungus, because I can easily deal with a deficiency, but a fungus i have no experience with.
I top dressed them all with about 2-3 inches of fresh soil, and fed lightly the last watering and the one before that, so if it's a deficiency i should know any day now.
I know there defieiniety some deficiencies that I hopefully have already taken care of, and that's the only reason I'm considering that this may be another symptom, because some of those deficiencies cause brown spots.
I honestly haven't seen anything that looks the exact same, deficiency, fungus, or pests.
I've seen one picture that had the same problem but with no answers

I really need to get a new ph meter.
Oh yeah one last symptom that clearly resembles a phosphorus and magnesium deficiency
A lot of the older leafs that srent getting much light are yellowing and dying very quickly while the veins remain green.
I mean. the buds are still developing and all, but I feel like they've slowed down. The first 2 weeks (which is mostly stretching) they grew bigger than they have the last 2 weeks.
But they've also been stacking up trichomes and developing more calyxes

Well I guess none of this even matters, been having rainy weather, and its suppose to rain non stop for atleast the next week, so I can't get my humidity below 75%. Its about 84% right now.
No doubt that within a week or two they'll be covered in all sorts of molds and fungus

Just when things started getting good -_-

Air flow man. Even if you have high humidity if you have good air flow you should be just fine.

I've got pretty good airflow, it just worries me hitting that high. For one, it can hinder nutrient uptake because the leafs wont be able to transpire the way they should.
Either way I think I'm going to rent a dehumidifier.
It says 25$ for the first payment. So if that's true, then 25$ and I got a 70 pint dehumidifier for 4 weeks which is all I need