I might be a lil bit the culprit of it getting off track lol
I just speculated that it might be possible and that in that setup it might potentially allow for the tiniest bit to exist because of the constant addition of fresh nutrients to your siphon tank which is also simultaneously being subtracted from…
When you say you know 100% that it doesn’t have any pathogen at all because of the roots, let me ask you a few questions just to think about in that regard (you really don’t have to answer tho lol)
Let’s say your siphon tank developed one microbe, just one, and it got sprayed onto the roots… do you think that one singular microbe would do or show any sign on the roots?
Would it get wash off by the next spray from the nozzle? Would it multiply before that?
So, I think it might be safe to say one single microscopic pathogen might not do or show anything under these Aeroponic conditions… but what about two, four, 100, 1000?
What point would it show and like I said, maybe some is getting washed off so maybe it’s sign of existence is different?
Maybe it’s another type of pathogen that slows growth up top but doesn’t show on the roots?
Honestly, I really have no idea what I’m talking about
I guess I’m sort of just playing devil’s advocate and a lil paranoid about being sterile