weedtech said:

Soil retains salts and releases them slowly. Soggy soil is the path to many bad things.
Take some subset of that population and give them worm casting tea (only) and see if that is enough to make the soil function like it should. Just a suggestion.

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weedtech said:

There are some commercial brands. I've used Vermitea. https://www.vermicrop.com/compost-tea

So the deal is soil has the nutrients, if it was made properly. Unlocking those nutrients takes a village, of microbes. They are quite sensitive to PH and are usually killed by heavy nutrient salts. Worm casting teas are a gentle way of feeding and promoting the beneficial organisms. This is how organic farming works, with much less focus on what chemicals you can toss in to "make it so".

I would add I use coco indoors, because I want to manipulate that part. Soil is not forgiving of mistakes. Soil has a mind of its own, and you have to listen. Coco is driven, like a rental car.

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