OK, so going down the water rabbit hole has got me thinking of a PH Meter. The Brew 4 Life guys were pushing the Milwaukee one but I am wondering what you all use and is it really all that necessary?
Lots of people seem to love the Milwaukee 101 and 102. And will say you should "buy once, cry once." But I use a cheap one because I basically trust Bru'nWater and only check to make sure that I'm not miles off (which would indicate to me that I made a mistake measuring out my salts and/or acid).