Can someone please clarify on all the confusion is it 6 / 9 all the way through or is it 6 / 9 until stretch stops than once stretch stops 6 / 12 for one week then 9 bloom until flush is this correct?
Well, yes, or no, but sort of.
There is what rez did, and what he ended up doing. Then there is what others do.
I was cutting out the micro starting around week 6, but also tried full 6/9 all the way through. I preferred the latter. Seemed to give both additional weight and quality. Sometimes I don't even flush... Having the same feed made things like dripper based feeding possible as I did not have room for the two rezs.
Like all things too many variables to have any one rule that can never be argues against.
Then there is the whole cal/mag e/s thing...
H3ad indicated he could drop the es and that C/M was not needed, but IIRC he was on well water while others had RO or city....
I use RO and have been doing good with .75 Tbs of ES per 5 G; brings my PPMs from starting @ 30 to ~ 60, then add 6/9 and PH to 5.8 to end near 650/1.4 ec. Else I get signs of mag def. I was useing cal/mag in simmilar fashion (either c/m or es, with primary being cm), but have stopped cm and like things so far.
So, you have to try and see what works for you. I could definitely see the ladies yellow up when I would cut the micro, and one cool thing of this method over others, such as KISS with maxibloom, is you have the option if you think cutting N is helpful.
I can say that 6/9 all the way through does work, and nitrogen taste aside, the plants finish better when I leave it in. Some argue the plant should look dead at harvest, etc, but I found that was counter to yield and quality, but could just be my strain, style, environment, etc. When I cut micro they would look dead at finish, that is for sure..
With all this said, I think 6/9 until a week before and then flush is ideal. CM or ES is more complicated. To me it's a function of starting water and strain, along with the grow environment. We have all heard of mag whores, yet some claim its all myth. I feel both are right and that it may well be a combination of genetics and rate of growth, the latter as a function of environment such as light/PAR, co2, temps, etc.
As such there is no single answer here.
I try and split the difference. I figure starting with 60-80 PPM that has e/s added will not burn the plants as I end up with ~ 650 PPM on .5 scale after 6/9, and it seems to helps my gals stay green. If I planned better I would do the flush. Honestly I don't notice the difference and generally don't flush anymore. But my tastes may simply run on the quantity over quality side; not being able to tell the difference makes it easy to forget the flush.
HTHs