I've been reading Phil Markowski's Farmhouse Ales book and I'm trying to line up the water profile in the book with what's available in the Water Calculator. I'm super new to the water adjustments (and it's been 20 years since I've taken Chemistry) so there are still a few grey areas in my process. The profile in the book is pH: 7.2 Bicarbonate: 350 Ca: 52 Cl: 20 Mg: 17 Na: 35 Sulfates: 107 I'm assuming Sulfates == SO2 in the water calculator But what is Bicarbonate? is that HCO? Because it's REALLY high compared to the other water profile options. And how does that line up with the source water? My city water report provides Alkalinity (as CaCO3) as 28 mg/l So I don't understand why the Water Calculator uses "Bicarbonate" in the source section and "HCO" in the target section unless they're equivalent but I don't think CaCO3 == HCO Or I guess I should ask if my input alkalinity is 28 mg/l CaCO3, and my target is 350 Bicarbonate, what should I set the Target HCO to?