I believe that level of HCO3 will be fine for darker styles, but you will likely want to reduce it by dilution for lighter styles. What did the rest of the Ward Labs report reveal?
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I'm really liking Meridian.
Apollo would be killer in any APA or IPA. I bet it would go real nice paired with some EKG's in an English IPA as well.
+1 Bru'n Water
To reduce from 7.2 pH to 5.5 pH would take 0.09 ml/gal of 88% Lactic acid.
It's going to depend on the amount of alkalinity more than the starting pH. In BrunWater, I put in 215 ppm for alkalinity in the sparge water acidification tab (263*50/61 to convert from bicarbonate ppm, according to Palmer). For a desired water pH of 5.5, it calculates 1.21 ml / gal of 88% lactic acid.
You can also do this in Kai's water calculator; just set the sparge water volume to the desired amount of water to treat and scroll down to the "sparge water acidification" section.
Realized this weekend that not all RO water fits the profile in brunwater.
I'm not planning buy this book from any retailer at the moment so the price difference doesn't bother me in any way.
That said, the dues we pay to the AHA are used for far more than discounts on books. I pay my dues because doing so supports a team of people who have our backs as home brewers. Without them many of us would be brewing illegally in our home state. We would not have access to the resources we currently do to improve our craft. The book discounts are nice but not the reason we all joined the AHA. Please keep in mind that in the grand scheme of things the AHA is a tiny organization with limited resources doing a very good job on executing on their charter.
AFAIAC, the gold standard is the March 809 HS. Although there's another version with a larger impeller that's probably even better. I intend to upgrade the impeller in my 809.