if you have to much trouble finding it let met know i have it written down, im having trouble finding it as well.
. im actually talking to him at the moment on another site.i just pmed him what his current formula is so if he tells me ill tell you.
it sounds to me like unless your running co2 dehumidification and high temps, and mad light, like you can cut the potassium down,
as transpiration wont be at the level where that kind of potassium is needed
his numbers for that formula were (ppm)
N 400
P 100
K 449
mg 50
ca125
S 66
FE 10.0
mn 5.0
B 5.0
ZN 5.0
Cu 1.0
moly 0.09