So my plant is about 4 1/2 weeks flower. It is a pure afghani from DNA seeds. So far has gone good besides a few hiccups ( its my 1st grow). But i have been feeding it Big Bud for past 2 weeks. Still all of my lower leaves are turning yellow and nearly all of the original fan leaves are also gone yellow and i pulled them off. Should i increase the amount of bid bud i am feeding witch at the moment is the recommended amount 2ml per litre. Besides the lower leaves all the new growth is nice dark green. She has at least another 3weeks left till harvest.