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Thread: This pool Chemical stuff is confusing

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    This pool Chemical stuff is confusing

    Hello all,
    I might be dumb or not comprehending the chemical aspects of maintaining a pool. I have read the pool school and several other pages, but I just don't understand. I have a cloudy, green pool. I have the TF100 test and tested the water.
    My results are:
    CYA - 60
    FC - 8
    CC - 0
    TC - 8
    T/A - 150
    PH - 8.4
    From what I read, I "Think" my readings are ok. But why do I have a green pool?
    Thanks,
    16344 gal, AG, Fijian 52 Pool 27' round w/ 1.5 HP 21 Sta-Rite Above Ground Pool Sand Filter System. using ZeoBest ZeoLite Filter Media.

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    Smykowski's Avatar
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    Re: This pool Chemical stuff is confusing

    Recommended levels are based on a clean pool and should be used for maintenance. If your pool is green, you have to shock it first.

    Your pH is way too high. Get it to 7.8 pronto.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
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    GreatCanadian's Avatar
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    Re: This pool Chemical stuff is confusing

    How long between adding chlorine and testing? If you have algae your CC should not read zero.
    13'x22'x52" 8,000 gallon ProSeries Pool with Borates
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    Re: This pool Chemical stuff is confusing

    The pool was green with alge yesterday, day before yesterday we had a very hard rain. I tested yesterday and added 2 gallons of bleach to the pool.
    I woke up this morning, vacuumed the pool and tested again. I posted the results in my first post.
    16344 gal, AG, Fijian 52 Pool 27' round w/ 1.5 HP 21 Sta-Rite Above Ground Pool Sand Filter System. using ZeoBest ZeoLite Filter Media.

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    Mod Squad zea3's Avatar
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    Re: This pool Chemical stuff is confusing

    You need to complete the shock process to clear your pool. Please read the shock process and defeating algae for more information.
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    GreatCanadian's Avatar
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    Re: This pool Chemical stuff is confusing

    I agree with you zea, but something isn't right. If he has algae, then his CC should NOT have been 0 this morning. And I doubt they were. There is something wrong with the test results.
    13'x22'x52" 8,000 gallon ProSeries Pool with Borates
    Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
    Bestway SWG
    AquaPro ECO500 50,000 BTU heat pump
    GLI Whirlwind Solar Cover Reel, TF-100 Test Kit

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    Re: This pool Chemical stuff is confusing

    The test Kit Chlorine Drop Test states.
    "5. To test for Combined Chloramines(CC), add 5 drops of R0003 to the solution and swirl. If it remains clear, you have no CC's. It it returns back to pink... blah, blah blah. "
    I added the 5 drops of R0003 and it remained clear. So I recorded as no CC.
    16344 gal, AG, Fijian 52 Pool 27' round w/ 1.5 HP 21 Sta-Rite Above Ground Pool Sand Filter System. using ZeoBest ZeoLite Filter Media.

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    Swampwoman's Avatar
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    Re: This pool Chemical stuff is confusing

    With PH that high, I am wondering if metal oxidization is possibly causing the color. Just a wild guess, but that would only be if there a) wasn't prior algae and b) chlorine never dropped below recommended level.
    In ground extended Grecian, 22,000 gal, Hayward 220t sand filter, vinyl liner, dolphin m4 supreme.
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    GreatCanadian's Avatar
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    Re: This pool Chemical stuff is confusing

    Icifers, you tested this morning and FC is 8. Can you test again and tell us the FC?
    13'x22'x52" 8,000 gallon ProSeries Pool with Borates
    Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
    Bestway SWG
    AquaPro ECO500 50,000 BTU heat pump
    GLI Whirlwind Solar Cover Reel, TF-100 Test Kit

  10. Back To Top    #10

    Re: This pool Chemical stuff is confusing

    From the time that zea3 told me to shock the pool. I put in 2lbs of Blue Wave Chlor-Burst Fast-Dissolve shock. Because that is all I have at the time, I am waiting for my wife to come home from the store with bleach. I just took my readings and I have:
    FC - 13 - (26 Drops)
    CC - .5 - (1 drop).
    From what I read from the "http://www.troublefreepool.com/pool-school/shocking_your_pool" I need to get my Shock level up to 24.
    16344 gal, AG, Fijian 52 Pool 27' round w/ 1.5 HP 21 Sta-Rite Above Ground Pool Sand Filter System. using ZeoBest ZeoLite Filter Media.

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    GreatCanadian's Avatar
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    Re: This pool Chemical stuff is confusing

    Test again after 2 or 3 hours (let us know how long), and post again. I'm beginning to wonder if you really have algae
    13'x22'x52" 8,000 gallon ProSeries Pool with Borates
    Intex 110 pound Sand Filter with Zeobrite, 2650 gph pump, 0.95 hp
    Bestway SWG
    AquaPro ECO500 50,000 BTU heat pump
    GLI Whirlwind Solar Cover Reel, TF-100 Test Kit

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    Re: This pool Chemical stuff is confusing

    It's green, I can take a picture and post it.. if need be...
    16344 gal, AG, Fijian 52 Pool 27' round w/ 1.5 HP 21 Sta-Rite Above Ground Pool Sand Filter System. using ZeoBest ZeoLite Filter Media.

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    Re: This pool Chemical stuff is confusing

    Pictures ALWAYS help. The important thing to note here is you are in a "process" not an occasional or intermittent dose of chlorine.

    Shock value FC must be maintained over a period of days and you must follow "How to Shock Your Pool" up in Pool School.

    Everyone is easily confused on this point. You must do all the things suggested over a period of days and your pool will turn crystal clear. That often takes patience and faith but hang in there....this will work.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: This pool Chemical stuff is confusing





    16344 gal, AG, Fijian 52 Pool 27' round w/ 1.5 HP 21 Sta-Rite Above Ground Pool Sand Filter System. using ZeoBest ZeoLite Filter Media.

  15. Back To Top    #15

    Re: This pool Chemical stuff is confusing

    The only thing that changed since the hard rain we got and the pool turning green, I had ordered and recieved a "Pool Rover", to automatically clean the pool. Would that have cause the pool to turn green?
    16344 gal, AG, Fijian 52 Pool 27' round w/ 1.5 HP 21 Sta-Rite Above Ground Pool Sand Filter System. using ZeoBest ZeoLite Filter Media.

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    Re: This pool Chemical stuff is confusing

    Would that have cause the pool to turn green?
    No. There is no cnnection.

    Thanks for the pics. What is that greenish discoloration in the center of your pool underneath the net? Does it brush up when your brush it or vacuum it?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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  17. Back To Top    #17

    Re: This pool Chemical stuff is confusing

    I couldn't reach that part with the pole, the whole pool bottom was covered with it this morning, it vacuumes up, but I need to get a longer pool extention to reach that part. Headed to the pool supply shop now to pick one up.
    16344 gal, AG, Fijian 52 Pool 27' round w/ 1.5 HP 21 Sta-Rite Above Ground Pool Sand Filter System. using ZeoBest ZeoLite Filter Media.

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    Re: This pool Chemical stuff is confusing

    It's fine if you get in your pool when it below shock value by even just a little bit. Brushing and vacuuming is a VERY important part of the process and needs to be done anytime you observe stuff on the floor.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  19. Back To Top    #19
    Smykowski's Avatar
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    Re: This pool Chemical stuff is confusing

    Quote Originally Posted by GreatCanadian
    I agree with you zea, but something isn't right. If he has algae, then his CC should NOT have been 0 this morning. And I doubt they were. There is something wrong with the test results.
    Just to clarify, algae clearing does not necessarily throw off CCs. ChemGeek, please jump in if I'm wrong, but the major source of CCs (aka monochloramine, dichloramine, and nitrogen trichloride) is the oxidation of nitrogen based compounds like urea, ammonia, sweat, etc.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    JasonLion's Avatar
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    Re: This pool Chemical stuff is confusing

    Smykowski, you are correct. It is extremely common to have algae and have CC be zero.

    Metals are more likely to be the issue when the water is a clear transparent green. Algae is more likely when the pool is cloudy/murky. The photo looks more on the clear transparent side, but with a touch of cloudiness, so not definitive.

    An overnight FC loss test will clear things up. If you are losing chlorine overnight then it is algae. Otherwise it is probably metals in the water
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