My take from his video, and the reason I put it up is that he is showing us that most all of the basic nutrients a plant uses to thrive, aside from the Nitrogen, are chemically the same whether they are organic or if they are mineral nutrients (synthetic), and aside from the phosphorus and nitrogen they are also being processed the same in both organic and mineral solutions. So basically, the only thing you are gaining by running organics is allowing the microbes to process the proteins and aminos into the types of nitrogen the plant needs to use which also gives the plant aminos. But to be at the correct pH to depend entirely on the microbes for your NItrogen supply, you are not in the best pH that all the other nutrients will work their best.
He is trying to tell us that mineral nutrient solutions are not inferior to organics.
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The bird guano isnt used to change the pH, it is an organic source of phosphorus that will work in an alkaline medium. Might want to use minerals in a lower pH.
I saw your post the other day about switching to peat, for what it is worth; I havent ever gone that direction and believe that using mineral nutrients correctly in coco will give you the same qualtiy as organics.
I have come to find that it isnt about synthetic vs organic.... it is about providing the correct ballance of nutrients and creating the right enviroment in the medium to allow the plant to consume the nutrients correctly at all times that will create the best yeilds. The herb and the tomatoes I grow in coco taste better than any organics I have ever tried. I dont have any "chemy" flavor at all.