Rapid Leaf Yellowing 1 Week Into Flush

I am not as much concerned about this as I am curious. This plant hasn't given me any issue at all up until now. So I am assuming that the plants just knows it's at the end and is checking out at her own pace. Growing in coir, she has been off almost all nitrogenous nutrients for about 4 weeks now. About the 4th week in flower she began to yellow a touch and a just one application of fish emulsion snapped her back into shape..... I'd say maybe 4 or 5 leaves were starting to show the nitrogen deficient yellow a week ago when I decided it was time to flush..... but damn!!! In 6 days at least 1/3 of my lady has yellowed out. PPM of her runoff has been less than 100 the last 2 waterings and everything is pHed to 5.8-6.2.

So long question short..... are some strains prone to just yellowing out fast when they are flushed??

Post some pics. Are you growing in soil or hydro. Had that same issue last grow myself. Mine was my soil ph along side nitrogen dif.

i usually, in soil, up the N towards the start of flowering, its not unusual for this to happen, most of mine do it, but i tend not to panic, i remind myself that its a 'weed' and will recover from a LOT worse quite quickly if spotted and dealt with in time.

Drain to waist passive hydro in 50/50 coco coir & perlite. Sorry.... no pics. I took a coir sample from the rootball and shot a pH, it was dead on @ 6.2.........