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Thread: green pool

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    green pool

    Have been on this site religously. Information has been outstanding. Have been testing my above ground (10000 gal) 3 to 4 times a day to try and get rid of this perfectly green color pool water. All tests are good and within rec. limits. Have switched out filter, vacummed, brushed and nothing has changed. It has been four days since I started dealing with it and does not seem to change at all. Any more advice would be greatly appreciated. Would love to switch to the BBB method, but am trying to clear this green up. Thanks for your time.

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    Re: green pool

    Hi, fritz,

    Welcome to the forum. Is it clear green or cloudy green?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: green pool

    What sort of test kit do you have?

    Is the water green in a white bucket, or yellow? (yellow plus blue pool liner can look green)
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

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    Re: green pool

    Hey, Thanks. Pool is cloudy green. In white bucket is is very light yellow - to a cloudy clear. Test kit is a Hht 6-way and also using Aquacheck pool and spa test strips.

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    Re: green pool

    Cloudy green almost always implies algae. Algae ALWAYS says your FC has not been high enough to kill it.

    A full set of test results would be very helpful and I think the suggestions you get will be to shock your pool. Read "How to Shock Your Pool" up in Pool School and follow that process and you will be rid of the green.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: green pool

    Yes, it I would agree. the tests show FC 1.0, CC 5.0 + , TA 220 , PH 7.5, TH 220. Not sure what else to add. I know it says to shock, but do I just keep using bleach or do I add super shock? I have tested early, then afternoon, just did and have been testing in evening. The chlorine level is not dropping. The last things I added were stabilizer and muratic acid, before that , bleach.

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    Re: green pool

    Can you post a CYA result?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad Bama Rambler's Avatar
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    Re: green pool

    You need lots of bleach but without knowing what your CYA is as Dave asked, we don't know what to target the shock level at.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: green pool

    today, all levels the same and sorry, CYA is 40

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    frustratedpoolmom's Avatar
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    Re: green pool

    So you keep adding bleach, testing and adding bleach up to hourly until your FC hits 16 and stays there overnight. So you add the correct amount, let it circulate and then test in an hour. If you come up with a FC of 4, for example, you recalculate to hit 16 again and add that much bleach, etc. and so on and so on (I'm assuming you have learned to use the Pool Calculator?). Make sure you are running the filter 24/7.

    You're going to need an FAS-DPD test kit since your HTH kit only tests TC up to 5. You can go with the hole kit or just the FAS-DPD chlorine test shown here:
    http://tftestkits.net/FAS-DPD-Chlori...-test-p47.html
    Since you already have the HTH your next option would be to upgrade to this kit:
    http://tftestkits.net/TFTestkits-TF-50-p55.html which includes the test I linked above. More bang for your buck.

    Post back if you need clarification on anything - hope this helps
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Re: green pool

    thanks for your information... will let you know results. I am clear on directions and will look for test kit

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    Re: green pool

    No longer have a green pool, thanks for all your help. Greatly appreciated! Now, if I can just keep it there, now that the season is almost over.

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