i dont think you showld worry too much.
i think the plant is concentrating it's power on the bud thus the yellowing of the older lower leaves, sucking everything from them.
the ph shouldnt be a problem in your case because it didnt had time to affect the plant as you fixed it quickly.
if i were...
ty both for your interest in my problem.
@Hotrod2 i dont know any predators that can help me as i dont know much about the pest.
@Midwestgorillagrower your ideea it's not bad, it's just that i can see where it hit after the afected area dies and were talking about bigfoot plants....not just a...
hello, this is from an outdoor grow.
it's some kind of worm that goes inside the stem thru the top of the flower or branch. The attack began at the same time the flowering started.
I will post some pictures. Hope somebody can help me. Ty