interesting you bring this up Jeff. I jumped to the conclusion my lower than expected PH might be my Ro water and carbonic acid. Ive been getting lower than expected PH with some of the lots of avangard malts....distilled or RO water and in the .2-.3 range. This has been with the pils, munich, pale ale and vienna.
Im starting to suspect different maltsters and or lots being the culprit, not my water.
I just ordered some weyermann floor malted pils for next batch, and hoping to see if I end up with similar variance in PH or not.