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Thread: Radiant 17x33 pool, zero chlorine

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    Radiant 17x33 pool, zero chlorine

    Hi, new here, and I don't see well, so I will keep this short.

    17000 gallons
    Semi Inground Pool
    Vinyl
    Sand filter, with 17 3/4" tall filter
    Hayward Super series 1.5 pump
    pool installed 6/2011

    Readings: Chlorine 0, PH 6.5, alkaline 40, cyanuric acid 0 Pool is cloudy, and I keep dumping shock in and it rises to where it should be then drops to zero......was told phosphate issue....zero phosphates.

    Please help!

    Paula

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    Join Date
    Jun 2012
    Location
    Howell, NJ
    Posts
    977

    Re: Radiant 17x33 pool, zero chlorine

    First, what kind of test are you using? Also, what type of shock are you adding? Basically, you have an algae issue and if your CYA is 0, the sun is burning off your chlorine.
    1) Get a good test kit, which is linked to in my signature.
    2) While waiting for test kit, read pool school a few times.
    3) Adjust pH if needed based on test kit.
    4) Adjust CYA to 30 if needed based on test kit.
    5) Follow shock process in my signature.
    Oh, and phosphate removers are just a way to drain your wallet. Phosphates don't matter.
    John
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.
    Wanda the Whale pool vacuum, home made heater, Taylor K-2006
    Cloudy Pool? 1) Order test kit. 2) Follow SLAM
    New to TFPC? Read Pool School a few times, then post questions. PoolMath will help with chemical additions.

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    Re: Radiant 17x33 pool, zero chlorine

    HTH 6 way test strip. What is the best product to raise the CYA? We added Natures way super shock. I will order the good testing kit for future. Thanks for your help I appreciate it very much. Never had these problems the first two years.

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    Join Date
    Jun 2012
    Location
    Howell, NJ
    Posts
    977

    Re: Radiant 17x33 pool, zero chlorine

    I wouldn't do anything to CYA until you get your own proper test kit. Strips are horribly inaccurate. What do you use for daily chlorine? Nature's Way Super Shock is Cal-Hypo, which increases CH. You don't have a CH or TH number, so I don't know if you can safely use any more of the shock. For now you should just stick to liquid chlorine/bleach. It will be difficult to know just how much you will need by using test strips. For now, until you get the proper test kit, I would target 3 ppm of chlorine. You can use poolcalculator.com to know how much to add.
    John
    7 year old ~13,500 gal 24' AGP with 1.5 hp Proline pump, 150 sqft Pleatco cartridge, filled with well water with pH of about 4.5.
    Wanda the Whale pool vacuum, home made heater, Taylor K-2006
    Cloudy Pool? 1) Order test kit. 2) Follow SLAM
    New to TFPC? Read Pool School a few times, then post questions. PoolMath will help with chemical additions.

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    Re: Radiant 17x33 pool, zero chlorine

    Quote Originally Posted by JohnN
    4) Adjust CYA to 30 if needed based on test kit.
    5) Follow shock process in my signature.
    I would switch these two steps around....at 20 CYA shock level is minimum 10 FC, at 30 it's rises to a minimum of 12.
    28K IG Gunite, 60 sq. ft. Pentair DE Filter, 2.2hp WhisperFlo Pump, Polaris 3900 Vac in Baltimore, MD.

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Radiant 17x33 pool, zero chlorine

    JohnN is correct. For an outdoor pool it is best to raise CYA to at least 30 either before shocking or at the same time you start shocking. Lower CYA levels result in losing huge quantities of chlorine to sunlight, more than wiping out the small savings in target level.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Radiant 17x33 pool, zero chlorine

    What is the best product to raise the CYA level?

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    Smykowski's Avatar
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    Sep 2011
    Location
    Gurnee, IL (North Suburban Chi-town)
    Posts
    3,065

    Re: Radiant 17x33 pool, zero chlorine

    It'll be labelled "stabilizer" or "conditoner." It doesn't matter what you buy, but read the label: you're looking for cyanuric acid in the 95-100% range on the ingredients list.
    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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