It's going to take a few days before you'll have your answer. From the pics, the plants don't look like they're too bad off right now so a couple days wont be an issue. If they are still getting worse by Monday morning try something else. Do a google image search of different deficiencies and match them to yours. No matter how good the pic nobody will be able to see the details of the leaves like you, nor do they know the history of the plant. I will keep checking back a couple times a day to see if there's any progress.
Forgive me if you've already answered this. I've read this thread and your other one a couple times and I don't remember ever reading anything about your PH, other than you - or someone else, saying that it isn't a PH issue. What is the PH of the runoff water? A cheap swimming pool PH testing kit from Wal Mart runs less than $10 if I remember right.