Help! Can't figure out what's wrong...

This just happened literally overnight to my WWxBB in week 7 flowering:




It starts as small dead spots along the leaf veins and on the leaves that look the worst, the spots are much bigger and spread out. Only certain areas of the plant seem to be affected and it seems to be mostly affecting newer growth and fan leaves coming out of the buds. The only thing I've thought it resembled was Mg deficiency but it still doesn't look quite like that. I also thought it might be bugs of some sort but can't see a thing.

Any ideas? :/

check out this link..it helped me...http://www.growweedeasy.com/marijuana-symptoms-pictures

that looks awesome what all did you use what strain light, soil details??

cal deficent. my WWxBB i just harvested last night had same problem bump up your cal/mag if ur using it, start using it if your not. the hurt leaves will not heal but watch the new for improvment.

edit: week 7 you should almost be done, mine finished 8 weeks other will be 9ish.

^ Hmm... interesting.. thanks! I wonder if cal/mag is being locked out somehow? Because I've been giving her a hefty dose of Calmag every time I feed but I guess it's not enough. I did lower it a bit last time I watered but since I'm getting into the home stretch I've been cutting back on all the nutes. If the bud leaves end up a little speckley will it affect the taste/smoke?

Oh, and I've been using the AN Jungle Juice trio and Cal/mag. In the past 3 weeks or so I've only been using the bloom nutes and the Cal/mag.

did it start after your last feed? if so then yea might have hit a lock out. whats ur medium and last time you flushed?

I've never flushed because I've haven't had an issue until now. I'm using FFOF. Will flushing help? Should I feed after flushing?

What nutes ate you using? NPK value s and all.

I second the Calcium deficiency. Looks exactly like one of mine that had it and correcting the pH and adding CalMg+ fixed it.

-Sap