The below is elemental ppm (not the same as the ppm on a meter). I guess that is where a lot of confusion comes in for people, as it did for me. They are two completely different values and highlights the absolute bs contradictory or outright wrong info around growing mj.
COCO (Half manually fed, half blumats)
Elemental ppm in veg:
N - 150
P - 38
K - 160
C - 95
M - 60
S - 65
Elemental ppm during stretch, to the end of week 3:
N - 150
P - 60 (bumped up with mpk)
K - 189 (mpk)
C - 95
M - 60
S - 65
Elemental ppm from week 4 to end of week 6:
N - 95 (half the amount of N from Cnitrate since stretch is done)
P - 84 (further increase of mpk as the established bud sites begin to fill out)
K - 216 (mpk)
C - 40 (reduced with cal nitrate, although tap water holds some C too, so ppm will be slightly higher than shown here).
M - 60
S - 65
Elemental ppm from week 7 to end of week 8:
N - 95
P - 60 (dropped to it's previous level)
K - 189 (dropped to it's previous level)
C - 40
M - 60
S - 65
For final week 9 the above ppm of all is cut in half
N - 50
P - 30
K - 95
C - 20
M - 30
S - 32
No flushing is done, since the above final week ppm and previous ppm levels are on the low side, any slight nutrient build ups from previous weeks will sustain (in theory) for the final week. 20% run off is maintained during the last week. Prior to that, with such low over all ppm at any given point, they can go with no run off for more than a few feeding's.
Not saying all of the above ratios is 100% correct, but just an idea of ball park elemental ppm changes from veg and across the 4 flowering phases.
On another note, anybody with more experience who can recommend ratio changes please do so. I always got the feeling K was too high during early/mid with the above, although it's still within the boundaries from everything I've read. It would require a base change to adjust, so been putting that off.
