Even by looking at the FAQ and looking at yellow leaf pictures with the causes and cures. Many people would just like other growers educated guess on what they think the problem is.
Yellow leaves can be caused by a few problems.Its best to get a few others opinions .After all for most of us alot of time ,money, nurturing , worrying, babying ,high expections, and the law always over our shoulders goes into our grows.
marijuana can go down the tubes quickly without the proper treatment for the problem. Who else would you ask about yellowing MJ leaves ..Your local garden center??? Picture that one ,walk into your local garden center and set down a 3 ft MJ plant and ask whats causing this yellow leaf problem..
I find its best that if you have nothing good to say then say nothing at all..