It’s more like the micro’s work as a team helping each other to multiply
into many and by throwing something else into the mix just messes them up and they can’t do their job. But left along they will feed the plant and the plant will take care of them.
By making your own then you don’t have to buy that over priced nutrients.
I am just about done making one of my tea’s and it will be enough to feed all the plants for the next three years , maybe more . and the soil I make I can use over and over and over again. Thus I can invest in better lighting and air flow and temps. Now That’s a big savings if you look at the big picture.