Advanced nutrients in soil runoff

It is quite possible the "mix" of the soil/nutrients/microbe and root exudants could lower the pH, yes. But of course that's also purely speculative.

I have no idea how to do that lmao. I will have to look Into it. Thanks very much for the advice bro! I'll have to look into it. What you've said is way beyond anything I've looking into 😝😂 ANs nutes buffer to 5.8PH so I guess theres a battle between the soil buffer and the nutes... the AN prevails.. even though I put PH up in and bring it to 6.3-6.4 before watering. It's just weird. I've added voodoo juice, piranha and great white could the microbes be aiding the lower PH as that's what they prefer? I mean my plants look fine but you see loads of issues due to PH and obviously dont want to encounter them if it can be avoided

Like, if your soil is buffered to 6.2 pH, the runoff really shouldn't be that much less, especially with straight water...so that seems a bit odd to me (but hey, I've never even used pH testing).

Eh, it might start to be an issue...it's a bit difficult to say. For neutralizing it, if you can work in some (hydride/liquid versions of) calcium, potassium, magnesium and somehow sort of neutral high surface area carbon it'd help "regulate" stuff.