So I've recently moved to electric brewing on my 3-vessel HERMS and for the first few batches I thought I was being smart by using hot water to filly my Mash Tun and HLT, cutting down on the time it takes to heat to strike temperature. I then read somewhere this week that you should be really only starting with cold water as you don't know if your water chemistry is changing at all within your hot water heater (minerals precipitating out?). I currently use my municipal water report for a starting point in my salt addition calcs which is obviously based on cold water from the city.
Does everyone else that's starting with tap water, strictly using cold water?
Does everyone else that's starting with tap water, strictly using cold water?