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Thread: Greenish Crystals in Pool

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    Greenish Crystals in Pool

    I have a SWG and recently noticed some greensih salt crystals forming in one corner of the pool with some silt. Any idea what could be causing this? My Salt reading is also lower that it has been over the past months.
    35k / Hayward Swim Clear C4025 Cartridge Filter / Aqua Rite SWG / In ground / Pebble Tec

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    In the Industry

    duraleigh's Avatar
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    Re: Greenish Crystals in Pool

    My first reaction would be to clean them out and see if they reappear.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Greenish Crystals in Pool

    I have and they came back. They are also in the pool skimmer net. It looks sort of like pool salt, but I can't imagine that the salt would be reforming.
    35k / Hayward Swim Clear C4025 Cartridge Filter / Aqua Rite SWG / In ground / Pebble Tec

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    Re: Greenish Crystals in Pool

    Do you have a heater or copper pipes?
    Sean Assam - Sean@teamhorner.com
    National Accounts and Commercial Products Manager
    AquaCal Heat Pumps www.aquacal.com
    AutoPilot Salt Chlorine Generators www.autopilot.com

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    Re: Greenish Crystals in Pool

    Quote Originally Posted by Poolsean
    Do you have a heater or copper pipes?
    No, I don't.
    35k / Hayward Swim Clear C4025 Cartridge Filter / Aqua Rite SWG / In ground / Pebble Tec

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    Melt In The Sun's Avatar
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    Re: Greenish Crystals in Pool

    Can you post a picture of them?
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
    TF Test Kits -- PoolMath -- Pool School
    Make each day your masterpiece. - John Wooden

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    Re: Greenish Crystals in Pool

    Have you considered having a pool store run a test for the presence of metals in the water? I would specifically be interested to know if there is copper in there and if so, in what quantities.

    Can you post a set of test results as well?

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    Butterfly's Avatar
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    Re: Greenish Crystals in Pool

    Have you added any copper based algaecides or anything that contains copper?

    A full set of test results would be helpful.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
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    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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    Re: Greenish Crystals in Pool

    Quote Originally Posted by Melt In The Sun
    Can you post a picture of them?
    Here are some pictures. It sort of looks like undissolved salt, but I can't imagine why that would be the case. I'm going to have Leslies run a test this weekend.





    35k / Hayward Swim Clear C4025 Cartridge Filter / Aqua Rite SWG / In ground / Pebble Tec

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    Re: Greenish Crystals in Pool

    not sure what this is. Wind blown debris ending up in your pool? Sand from Paver stone deck? Did you use Bacquacil/bagunide based chemicals previously? Is it clumped together bacause it's wet or is it slimy?
    Sean Assam - Sean@teamhorner.com
    National Accounts and Commercial Products Manager
    AquaCal Heat Pumps www.aquacal.com
    AutoPilot Salt Chlorine Generators www.autopilot.com

  11. Back To Top    #11

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    Re: Greenish Crystals in Pool

    Quote Originally Posted by Poolsean
    not sure what this is. Wind blown debris ending up in your pool? Sand from Paver stone deck? Did you use Bacquacil/bagunide based chemicals previously?
    No.

    Quote Originally Posted by Poolsean
    Is it clumped together bacause it's wet or is it slimy?
    It's clumped together because it's wet. It's not slimy. I've also found this stuff in the skimmer net.
    35k / Hayward Swim Clear C4025 Cartridge Filter / Aqua Rite SWG / In ground / Pebble Tec

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    benavidescj's Avatar
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    Re: Greenish Crystals in Pool

    Are you close to the Gulf of Mexico?

    Ok, i am sorry, could not resist.
    Carlos
    Pool: 28,000 gallons IG; IC 40 SWG; Pentair 120 gpm cartridge filter; Marble finish; Pentair Wisperflow 1.5 hp; Polaris 360
    Spa: 350 gallon; Bromine
    How to shock your pool

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