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    avaate's Avatar
    avaate Posts: 1, Reputation: 1
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    #1

    Jul 21, 2008, 08:41 AM
    Hard to soft water
    How does salt soften hard water?
    amricca's Avatar
    amricca Posts: 851, Reputation: 92
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    #2

    Jul 21, 2008, 08:56 AM
    Hard water contains a lot of calcium or magnesium in it. A water softener replaces the calcium and magnesium ions in the water with sodium ions. The water in the house runs through a bed of small plastic beads or through a chemical matrix called zeolite. The beads or zeolite are covered with sodium ions. As the water flows past the sodium ions, they swap places with the calcium and magnesium ions.

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