mine began having a similar problem but didn't get that bad... I found that my soil PH was off and it was too acidic causing a nute lockout. I flushed it, added dolomite/garden lime and began with the nutes again second watering causing a balanced PH and it recorrected itself..
good luck
Elway
elway07 Reviewed by elway07 on . Persistent problem(pics) Hello out there! I've included pics of 3 leaves (nev. haze/J. herrer)in various stages of decline. If any of you had a moment to take a look at them and tell me what you thought was wrong i would be very greatfull. I use cal-mag, liquid karma, hygrozyme, silica, a couple of diff. bloom nutes, Dutch masters floaison-potash plus foliar(.7-4-11). Over all the ladys seem to be doing fine but this problem is persistant starting with the oldest leaves on the bottom of the plant migrating upwards. Rating: 5