RO/DI and water softener question

Discussion in 'Filters, Pumps, etc..' started by kdneo, Oct 28, 2009.

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  1. kdneo

    kdneo Fire Shrimp

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    Do you run a RO/DI in line before or after the water softener?
     
    kdneo, Oct 28, 2009
    kdneo, Oct 28, 2009
    #1

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  2. ReefSparky

    ReefSparky Super Moderator

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    The RO/DI would go after the water softener. The water softener removes magnesium and calcium (in really high amounts). If the RO/DI was expected to remove "hard water" levels of these ions, the RO membrane and DI resin's life would be greatly diminished.
     
    ReefSparky, Oct 28, 2009
    ReefSparky, Oct 28, 2009
    #2
  3. AZDesertRat

    AZDesertRat Giant Squid

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    RO membranes love water softeners, they do much of the work for them.
    In fact if you read the fine print, all membrane manufacturers recommend softened water and do their performance testing and rating with soft water.

    Look at the fine print under the Product Specifications section here:
    http://www.dow.com/PublishedLiterat...seps/pdfs/noreg/609-09010.pdf&fromPage=GetDoc

    GE and all the others say basically the same thing.
     
    AZDesertRat, Oct 29, 2009
    AZDesertRat, Oct 29, 2009
    #3
  4. kdneo

    kdneo Fire Shrimp

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    good deal, I just figured the extra salt may screw things up, guess not
     
    kdneo, Oct 30, 2009
    kdneo, Oct 30, 2009
    #4
  5. carlos23

    carlos23 Plankton

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    carlos23, Nov 10, 2009
    carlos23, Nov 10, 2009
    #5