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ProMix is not just porous structure (like coco) as it includes lime for pH buffering. As farside mentioned, the mycos in ProMix is different from the microherd in LOS.ProMix HP does have mycorrhizae in it. And I recall that you add myco when you up-pot also. But you aren’t providing food (raw minerals) for the herd - only inorganic salts (with an aminochelate, in the case of MegaCrop). So, since you are feeding the plant instead of the microherd, the ProMix is essentially just a porous structure to support the plant, rather than a LOS.
This isn't hydro so pH'ing nutrients is unnecessary, and different from the pH of soil because ProMix lacks the humus that forms the basis of most soil blends. I can't tell you why they pH PM to 5.8 where soil is pH'd to 6.3-6.7, but I'm sure they can.How different is this than hydro? And, would a hydro pH closer to 6.0 possibly be more appropriate than a soil pH close to 6.5, in order to maximize nutrient uptake without the assistance of the herd?
I don't know the pH that mycorrhizae need to function, but I don't know why that ProMix would include it if it were ineffective, unless it's all a marketing ploy like say, Bud Explosion.Thanks for that - I thought it was buffered to mid -6s. Isn’t a pH 5.8 inconsistent with the pH needed for mycorrhizae to properly function? Why bother to include it?
I think the pH of ProMix settles ~5.8 within a week of wetting it. Not sure if that makes a difference to the conversation though...Ill take a stab at this.
I believe its all in the pH drift and the time it takes to get to that pH of 5.8.
Thanks farside! I'm glad that the microherd is something I don't have to think about .I think you are confusing Myco's/Fungi with Bacteria which is the main "micro herd" of LOS.
Two things for the record: I have no idea if adding mykos to my ProMix makes any difference to my plants. It could all be bro-science (a term that dates back to at least 2001), but I do it anyway. Please note that I do not go around to other grow journals touting mykos as a must-have for cannabis.
And this is my ProMix bag, posted just this past Friday funnily enough!