yea its going to take me a couple of days to get that ordered so i am hopeing to god that the vinegar works. i can already tell growth is stunted and my upper leaves are starting to turn yellow. sheesh
unless the plants are super bad - i think you might be worrying too much. if the new growth looks fine and the problem isn't spreading to other leaves - sounds like you may have fixed your problem.
and yes, weed is very resilient - i've done everything possible to kill (from over-nuting to light burning) my latest grow and they are still going strong.