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Thread: Mineral drop out

  1. Back To Top    #1

    Join Date
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    Weatherford, Texas
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    Mineral drop out

    I'm getting a scattering of white granules on the bottom of my salt water pool. I was told it was mineral drop out and it will go away on it's on.

    What causes this and is there a chemical treatment?
    Karl

    14,000g IG Plaster
    Intellicor IC40 SWCG
    DE filter-Nautilus FNS 60
    Polaris 280

  2. Back To Top    #2
    Mod Squad JohnT's Avatar
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    Re: Mineral drop out

    Welcome to TFP.

    More than likely it's calcium. Post a full set of test results and you'll get better advice.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
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  3. Back To Top    #3

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    Ft Lauderdale, Florida
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    Re: Mineral drop out

    As a manufacturer of the Pool Pilot salt chlorine generator, I have never heard the line "Mineral Drop Out", so that's a new one on me, although not technically wrong.

    "Minerals range in composition from pure elements and simple salts to very complex silicates with thousands of known forms..." from Wikipedia

    What does the white stuff look like? Flakes? John is probably correct though. Most minerals will stay dissolved in water. The most common pool related mineral is calcium, which can form a solid in water.
    Sean Assam - Sean@teamhorner.com
    National Accounts and Commercial Products Manager
    AquaCal Heat Pumps www.aquacal.com
    AutoPilot Salt Chlorine Generators www.autopilot.com

  4. Back To Top    #4

    Join Date
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    Weatherford, Texas
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    Re: Mineral drop out

    That's the term my Pool service company used when I asked about the white granules on the bottom.

    They are kind of flakey...looks like salt before it completely dissolves.

    I'll run some tests this afternoon and report back.
    Karl

    14,000g IG Plaster
    Intellicor IC40 SWCG
    DE filter-Nautilus FNS 60
    Polaris 280

  5. Back To Top    #5

    Join Date
    Jun 2010
    Location
    Weatherford, Texas
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    Re: Mineral drop out

    TH 400
    FC 4
    PH 7.8
    TA 100
    CYA 80

    Salt 3580

    Results from HTH 6 way test strips
    Karl

    14,000g IG Plaster
    Intellicor IC40 SWCG
    DE filter-Nautilus FNS 60
    Polaris 280

  6. Back To Top    #6

    Join Date
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    Location
    Ft Lauderdale, Florida
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    Re: Mineral drop out

    With hot water temperatures, your water balance is slightly scale forming, and can result in the cell staying clean because the calcium scale is breaking off the cell in flakes and blowing back to the pool, instead of building up thick enough to clog the cell.
    You can either drain down some water to lower the calcium hardness, or maintain your pH at a lower level, 7.4 is good.
    Sean Assam - Sean@teamhorner.com
    National Accounts and Commercial Products Manager
    AquaCal Heat Pumps www.aquacal.com
    AutoPilot Salt Chlorine Generators www.autopilot.com

  7. Back To Top    #7

    Join Date
    Jun 2010
    Location
    Weatherford, Texas
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    Re: Mineral drop out

    Thanks Sean
    Karl

    14,000g IG Plaster
    Intellicor IC40 SWCG
    DE filter-Nautilus FNS 60
    Polaris 280

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