I have been reading some of your posts, interesting for sure.
I see no deficiencies in my plants most times.
I use rainwater its has 0.0 EC and 6.2 pH
I am a old dog so new ways are hard when I am so comfortable.
I will continue to a better understanding of what you are saying after reading your posts over a few more times.
Ratz
On another note it is my understanding that to much P mixed in globally retards the mycorrhizae growth
Without a high P, you won't get the yields you want. I would argue as well that quality would be a bit hurting. If you have 300 ppm of K or so, 40 ppm of P won't do anything.... but you will have myco's!