I got the same issue, mines worked its way up, hoping a megacrop feeding fixes my issuesSorta looks like a potassium deficiency, but not many leaves are affected.
Would it B a good Idea 2 chop them!?If I see weirdness all of a sudden I first top dress with worm castings, water lightly and see if 24 hours improves the plant some. If not, ya, add some nutes but not full strength rec dose.
This, leave big fans alone as reserves for plant issues unless in the way of a budsite, i usually tuck fans under bud sitesI've cut off many leaves on my grows, don't actually remember if I had to take the first set or not. If all u have is 2 plants and the problem hasn't continued? Prolly just leave it alone. I take inner leaves that prevent light penetration.