I'll throw my 2 cents in about ph'ing the water in my "organic" soil.
Yes, people say the soil buffers and you don't have to ph the water. IME if I throw some city water with ph that can go over 8 in the plants don't like it. If I feed heavy with ph much below 6, the plants don't like it.
So I grow mostly organic, but I do ph. I'm not a freak about it like the hydro guys, but my plants don't like extremes in one direction or the other. Rainwater is usually PH 6.5 or so I've heard, so I just try to stay between 6 and 7.
I suppose my ph'ing may kill a few microbes, but my city water has fluoride and whatever other random contaminants, so I figure I might as well just keep the plants happy.