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If you see those ppm, it only means water is completely polluted by agriculture leachings in soil In nature, plants take most they need from soil, from their roots

Thanks Tom, but still didn't get it all. If ADA AS is not mineralized, then you mean its P and N sources are also organic? N and P are either mineral or organic. So, ADA AS would be organic N and P, coated to lower leaching in water? Also, based on your expierience, which of them will last...

Many thanks for clarifying all this really interesting Just one question. ADA AS is mineralized N and P while earthworm castings is organic N and P that needs to be mineralized by bacteria for plants to take it So, at the end, is it really important to add ADA AS to earthworm castings? Which...

As far as I know, only NPK are considered macro, because needed by plants in important amounts along with CO2 JBL soil doesn't have any macro except K You'll need to dose N and P. Dosing micro in water column will help soil to last longer. Also, when pruning plants you don't burry them often...

Tom meant soils rich with macro, that is P, N and K JBL soil and ferts don't include N or P, only micro and some K Most plants don't get significant nutrients from leaves, except CO2. Some plants are able to get most of their nutrients from leaves. Dosing water will make nutrients diffuse in...