I have no problem with pH balance. For a year and a half, I had an ND that promoted heavy alkaline diet. Occasionally I am bad; but mostly I abide by such a diet. He also push loads of water. I always have a large glass of water next to me.
What I worry about with the nasal spray, is that the weak acid may hurt more than the sodium chlorite. It does have to be activated for it to work though. Maybe I'll just try it in one nostril.