Originally Posted by

**Gary Slusser**
I've never used a percentage, I was taught to do the actual math, and for a time clock subtract a day's worth of capacity. I.E. say 15 gpg and a family of 4 at 60/gals/day/person = 3600 times say a 4 day service run would be 5 times 3600 = 18K and in a 1.0 cuft you'd set the salt dose at 5.5 lbs then set the regen days at 4, 8 and 12. That way you regen 18K and it uses 4 * 3600 = 14,400+/-. Your way uses 2.5 lbs more for the same K.

A reserve for a metered control valve, unless it has variable reserve like the Clack WS-1, you subtract a day's worth of gallons from the total gallons based on the K of capacity. I.E. using the above example, 18K/15gpg=1200 gals - 3600/15= 240 so 1200-240= 960 gallons and with your mechanical meter 5600, it can't accept but whole numbers and the 25 gals increments so you have to set it at 950 gallons. And it would regen on average every 950/240= 3.9 or call it 4 days.

Doing it your way you use 2.5 lbs more every 4 days times 365/4 = 91 regens times 2.5lbs = 227.5 lbs more salt/yr times 10 yrs = 2275lbs which is 1.2 tons more salt when you don't have to.

And here there is a 3.0 cuft at did he say 3 lbs?

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