I'm not sure if you ever solved your problems with the fan leaves etc. Turning brown after you went to 12 12..I have seen this many times no matter what size fabric pot or reg you use..it is root bound unless you just run clones on a 6 or 8 week schedule. Anything that has been in the pot for a while will get this. When you switch to flowering. Simply repot In to something bigger before you flower and let me know.
