My water report shows total alkalinity as CaCO3 (50ppm) and non-carbonate hardness CaCO3 (72ppm) and total hardness CaCO3 (122ppm). It seems all the water calculators I see are looking for HCO3 and I see the conversion is CaCo3 * 1.22. I just want to verify which CaCO3 is multiplied here, total...