The yellowing of old leaves is normal... how's the new growth?

Also, how big are your pots? Might be time to re-pot....

Got pics? The troubleshooting form would help also :thumbsup: (sticky in the top of the Plant Problems - Cannabis Forums Message Boards - Medical Marijuana, Cannabis Club, Dispensary, News, where this thread should really be... start a new one with the form and pics)

Someone with a little more experience will help you out there... but they will need all the info