:smoking: ...you heard it from the AN Wizard-in-Chief himself!
Thank you brudda TaNg!
.... Follow his directions DV, it appears you have indeed been going light on the nutes,... I ask again, have you treated with the epsoms salts yet? If not, small wonder there's continued progression on color loss up top,... as for the lowers, that's typical N defc. kicking in-- lower leaves going yellow fast, with no spotting or necrosis until very advanced,... upping the feed will help slow it down, but it's normal for them to start getting tapped out at this stage,... I doubt the color will improve much, if at all, on the uppers, what we want is at least a big slow-down or halting to progression,... the lowers may slow as well, but by later bloom, most all the fans will begin to fade,... some that are really tapped out now will soon shut down and drop off,...normal! My concern is more for the upper leaves,... at least I see no other defc. symptoms so far, no spotting, dead patches, tip/edge browning,... this is also typical of S defc..!