I’m 99% sure this damage is from insects but I don’t see any lingering around.. especially for this much damage. It’s on all of the branches in a horizontal line across both rows.
you def got some bug damage , but not what you are talking about, seems you have gave them a bit too much of something maybe new? the brown spots are ph issues ,you have locked 1 of the 3 macro nutrients , just my guess, real bad time for it too, hope you sort it out what did you give them about 3 days ago
Hmm. Well I haven’t personally watered them in a long time so that’s probably the issue. We had non stop rain every waking second from night of sept 29 until the morning of oct 7 and then we just had 4 sunny days so I’ve been letting the plants soak up what’s in the fully saturated pots