BeefSteak, I don`t disregard anybodys advice right away. I do research myself, ask for peoples advice here and then make a decision based on all the information I have gathered.
Thats what i do but for many years now, it dosent matter wether you take my advice or not as we take in all advice and replicate what works and best considerations. If my tone is straight forward i do apologise but i merely like to keep things brief and straight to the point, really i am a nice guy.
From what I have seen so far you claim that my plants are "Biobizz Grow" deficient. Is that what you`re saying?
No not biobizz grow deficient just whatever the bloom is imbalancing. Fair enough this is Rollitup and post that spots on leaves question and you'll get a million and one answers. I doubt many will be the same as mine.
No offense but thats about as useful as somebody coming here and saying "its probably some sort of deficiency".
O.K. Heres the usefull bit and i'm keeping it simple as you can go away and research it yourself.
1.) Those
BROWN spots on your leaves or to be more PRESCISE - on and around the leaf veins! are where the plant stores some of the more important nutrients it uses so when deficincy strikes with those particular nutrients the plant draws them from the leaf, it just so happens that as i have detailed these particular nutrients anr mainly stored along the leaf veins and hence what you are seeing.
2.) It is well documented and known that excess P/K on its own plays hell with just about every other nutrient when in excess, to me biobizz bloom seems more like a bloom booster than a complete flowering fert. Biobizz is sold as a two part feed i.e. grow and bloom with the idea that you raise the levels of P/K over N for flowering, the idea of discontinuing the grow for flowering is absurd if you consider the lovely trace elements the grow contains.
Put the grow and bloom together and you get a complete pretty even NPK level, for veg give more grow than bloom and visa versa for flowering, its not recomended to use just one for veg and one for flowering, give them a call and find out for sure. I use some bloom for the veg period as the grow is a little high in N and plants can get a little too overly dark green. You need to balancde out all 15/16 nutrients that the plant needs, biobizz just provides two seperate bottles i.e. grow/bloom which when mixed together do just this. Info on Biobizz on this site is crappy really, take it from a long term biobizz grower who has already tried to use just the grow for veg and bloom for flowering and got minimal results over both together in the right ratios. Good luck whatever you do but at this stage not much can really be done before harvest realistically.
Fan leaves can start developing deficiencies later on in flowering regardless of what you throw at it for nutrients because the plant doesn't give a shit about them anymore and is directing energy towards the flowers to perpetuate its life...I wouldn't worry about it if you are only a few weeks out from harvest 
