Take the total hardness and divide by 17.1 will give you the GPG (grains per gallon). This is a measuement use in water softening. Hardness is measured on a scale from <1 to 10.5. In your case, you have 11.69 so you can see you are off the scale and need a softener. I prefer a electrical mechnical (non-electronic) valve. The Fleck 5600 is a very reliable valve and will give many years of service.





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