Yeah, it’s not magic.

That’s why it’s cut down nutrient supplements and totally remove processed hormones — not totally remove both.

The soil ecology is good at:

- turning raw ingredients into slightly more complex ones

- accessing things in the soil

- having the fungi exchange hormones for sugars

So you need to deal with adding back trace elements as part of their plant food, especially if you use the same growth medium repeatedly (eg, indoor growing).

But you can usually get away with less of those supplements because the soil ecology boosts uptake.