Thanks guys. It's confusing, because there are liquid amendment products as well as soil mix products that advertise that they contain beneficial bacteria and fungi. I guess they contain spores? Do you think it would be accurate to say that everyone's healthy plants would ultimately grow roots containing the same bacteria/fungi makeup anyway, but the innoculant method just gets the plant to that point faster?
It seems like keeping a tank of fish is the best I'm going to do at culturing bacteria in water. I am yet to find a good explanation of why plants like fish tank water so much. I am thinking it is something at a bacterial level that might not be especially well understood. It could be as simple as the fish being a mechanism to get the water treatment chemicals out of my tap water.
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