I posted this in my grow journal, but I thought that I should post it here to get some advice from some serious organic growers.
http://www.rollitup.org/2044338-post14.html

Your help is greatly appreciated!

Seems pretty normal, espically since you are giving them final flushes, so they must be close to harvest. The fan leaves start to yellow because the plant is focusing on trich production in its final days.

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I had a bad feeling about that crack dealer from day one! I guess you can't trust school kids these days! - The Toxic Avenger

Word!
I think you may be right. I used BushMaster for a few days when i flipped them to 12/12... and that stuff has been known to shorten the flowering period in addition to its other effects. So the fact that the Nitrogen thing is happening a little earlier than normal. I can't believe that hadn't crossed my mind before.

I have a lot to learn about this hobby... but learning is so much fun! This is the most rewarding hobby I have ever picked up in my life.

Your in good shape bro. The same thing happened to me but I recognized it as a natural phase in the plants life cycle. Nitrogen is not used as much during flowering phase so thats what caused the yellowing. You'll be able to pluck a few off as well when harvest really gets close.

Well, if your in the harvest mode then the yellow leaves are sayin get ready to gather your scissors and helpers cause trimmin is just around the corner.

You guys just made me feel SO much better about things. Thanks!