I thought it was the alkalinity that was the problem, as that raises the pH. I have a softener, and the SS turns cloudy after a couple of weeks, maybe less. Softeners take out the hardness, which is the Ca and Mg. Softeners leave the bicarbonate, HCO3, which my water is loaded with, and the soft water is liquid Tums. Never tried the hot water for the SS, as some of the HCO3 will drop out at higher temps (which is why I drain 5 gallons off of the bottom every quarter, so the water heater life will be longer than the 7 years for the last one).
RO water is my solution. Too bad gmac can't find it conviently.