iv hear of that strain , dont know much about it tho. That definitly doesnt sound good for a plant never ocme across anythink like that..touch wood 
iv noticed this a good bit with HPS lights the plant just loves them and must help it eat up all nutes in soil, leaves etc. and since theres the best bit of 4 weeks left, U could feed them some if ur not already with less (N) added nutes. 
....I'll keep a close eye on her over the next couple of days n keep you posted! Hows yours coming along?
Not to bad, the ones with def are comming along and just afew babies to grow up now 
Thanks everyone!
massmedman: She's become considerably more yellow since I last posted any pictures. When i checked down the main stem i could see full leafs that were totally yellow and there's also a couple big fan leafs that are totally yellow too. Is it normal shes doing it this much?...I've been worried it's some kind of nitrogen deficiency as a result of giving her bloom nutes a few days back. =/
Happy 420 everyone!
GT
And as i mentioned abit back they love the hps so ur probley on ur way to lovely dence colas or loads of good budWhat kind of yellowing is it? are they yelowing all over, all at once and dying or the tips are yellowing slowly and working its way around? Since u said u gave some bloom nutes they usually contain some N , unless u used a straight P or K it would of given her abit of nitro
Uv plenty of leaves there anyway so its really not that bad and since its an auto they 'Automatically' come to an end nothing one can do (yellowing lower leaves is one sign).
The plant uses nutes from the leaves to produce bigger and more bud spots, the hps is just making this happen quicker IMO
Just a peace of mind for u
Man, wish I could help more but my diagnosis skills aren't there for you at the moment. I reach out for help in that area. I'd say be patient, see what the new growth does. I didn't feed mine much last time, and this time I'm doing mostly LOS, well I am on the CKs. But, if you have nutes and see yellow after I'd assume one is related to another. I'd go water, if not consider flushing but, at this point. I. Might just run water and watch. Sometimes the plant works things out before you can react, and then it leads to other issues if you react incorrectly. But, I'm learning.
My point is don't overreact. Have a puff, happy 420
