# Delete - Newbie Dupe

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#### Ronw

##### New Member
First of all, thank you to all the contributors to this forum, I have and continue to learn a lot!

We are on a well with a 2500gal storage tank and 1.5hp booster pump, all going through a 20in sed filter.

Our situation: 110 gpg hardness, 1ppm Iron, 8 people in house currently (yikes! yes, actually 7 kiddos but our oldest has left the nest, and yes, we do have a TV but obviously did not spend much time watching it

My Math:
8 people * 60 gals per day = 480 gals per day usage
110 gpg + 1ppm Iron = 115 gpg
480 gals per day * 115 gpg = 55200 grains per day to be treated

A local company with a very good reputation said I would need twin 12x52 tanks that are 2 cuft each.

at 8lbs/cuft salt dosing, each 2cuft tank will have a capacity of 48000 grains.

For regen frequency, it seems typical that regens occur anywhere from 3 to 7 days, but for my scenario, I think this means that one of the tanks will regen approximately every 48000/55200 days, which is .87 days?

Most of the literature I have found wrt dual tank setups say that they are for both 24-hr softened water or for really hard water. It seems companies really sell the 24hr soft water aspect of the system but I can not find much information about how these systems benefit extreme hard water situations like ours.

Note that 2 of our kiddos are probably going to leave the nest in the next year or so, and others in the next 5 to 10 years, so theoretically, our water usage, while high right now, will be decreasing in the coming years.

Also note that we are perfectly imperfect people and do not expect to have 0gpg water, just something less than what we have. I assume that 80gpg water is noticeably softer than 110gpg water, 50gpg noticeably better than 80gpg, 30 better than 50 and so forth.

With all of that said, my questions are:
1. did I do the math right?
2. Is the regen frequency in my above scenario too frequent? or what should be the regen be for a dual tank system?
3. How does a dual system help with very hard water, other than it using softened water for regen and they appear cheaper than an equivalent sized single tank system i.e. twin 2cuft system I think are cheaper than a single tank 4cuft system. Am I missing anything?

Thanks for your patience, and Blessings to all.

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Hey, wait a minute.

This is awkward, but...

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