slowly greying and dying fan leaves but not buds?

Ok, so I've noticed this for quite awhile now. I adopted a plant from the dispensary with it. I thought it was just pH problems, nope it was a fungus..

Even though I threw the plant out awhile ago(at least a month ago) the rest of my plants just got it!

I can't tell if it's a fungus that's in or out of the soil.

Is this something that root rot could cause?

The thing is, it's not life threatening to my plants considering they only have a week till harvest. One of them has a month to go though.

It looks like it's just on the leaves, not the buds. This makes me think it could be root rot that's causing it.

I remember reading foliar spray with copper treats leaf fungus, could that pertain to this?

25 views and no replies?

what's wrong, is there something in my teeth?

I'm just hoping you can make it to the chop; looks like you're close.

I've known about it for a month! If I can't make it another month I'd be surprised. I've been trying to keep it down with some alcohol and hydrogen peroxide with a spray bottle and water. It seams to kind of work.