Anyway, back to the original topic...Everyone always says that adding pH Down to tap (or any other water that is buffered) will be futile because it will simply be fighting the buffering capacity and the pH will eventually bounce back up. I understand this. So my question is, if I mix my tap with R.O. and THEN use the pH Down, won't it work much better (won't bounce back up) because I have cut down on my hardness by mixing with R.O.? Will the pH Down use up ALL of my remaining KH?