Water Softeners and Air Filtration Systems - hardness conversion

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moreira85
10-28-09, 11:47 AM
My water hardness is measured in CaCO3 at 36.4 mg/l, does anyone no what this would convert to in gpg?

Bob999
10-28-09, 12:27 PM
17.1 ppm (or mg/l) = 1 gpg