For the water-heads out there... I just finished reading utahbeerdude's papers discussing and comparing mash pH calculation models. If you have read the Water Knowledge pages at Bru'nWater and want to explore a little further under the hood, I highly recommend... https://dl.dropboxusercontent.com/u/47966976/Effect of Grist.pdf https://dl.dropboxusercontent.com/u/47966976/Effect of Water.pdf Now where the *#^$!@ is that danged "Water" book?