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How To Size a Softener Metered Systems # of People X 50 gallons of water per day (average) = # of gallons to be softened on a daily basis. X Hardness = Grains per day that your softener will use Size of the softener (40 000 / 32 000 / 30 000) – 10 000 backup reserve = 30 000 / 22 000 / 20 000 / Grains per day = DAYS Between Regenerations(4-10 days is Ideal Size) |
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