Originally Posted by

**John Vegas**
The 70 gallons total (it varies usually between 65 and 75) is what my Culligan says I use on average between regenerations.

Then it must be regenerating every day.

The water pressure and ID of the plumbing delivered a given flow of water to the water using appliances.fixtures and usually regardless of the water sue efficiency, the water flows the same gpm as the world's worst water efficiency appliance/fixture. The efficiency is found in how short time wise that the water flows into the appliance/fixture; the gpm flow rate is the same, they just fill etc. for a shorter time frame.

Yep, all the way down to the fewest lbs the control valve will allow. You can also reduce the number of minutes for each of the 4-6 cycle positions of a regeneration, which reduces the volume of water used per regeneration. BTW, a few more gallons of water per regeneration will be less costly than the cost of more salt and new resin out in the future.

To figure capacity, 2 people * 60 gals/person/day * the hardness (+any iron * 4) = grains per day. Times 8 days = the K of capacity. Then use a salt efficiency of 3333 grains/lb to come up with the salt dose lbs by dividing the K of capacity by 3333. The divide the K of capacity by the hardness (20 gpg) to get the number of gallons on the meter.

If you are using a control valve that requires a reserve capacity, add one day to the 8 (use 9 days) but only use the total grains for 8 days as the K of capacity for the meter setting' leaving the added day as the reserve. The salt dose has to be set for the 9 days.

I think I have all that right.... show me your math and I'll check it.

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