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Thread: PLEASE HELP! CYA off the chart, green pool, and need advice

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    PLEASE HELP! CYA off the chart, green pool, and need advice

    We had a problem a few weeks ago with a green pool and we got that fixed. We just went on vacation for six nights and came back to a green pool again. I just came back from the pool store and here are the test results.

    FC - 2.0
    TC - 5.0
    CC - 3.0
    ph - 7.2
    Hardness - 575
    Alkalinity - 120
    CYA - 250 or higher (test was run a month ago)
    Copper - .6
    iron - 0
    Total dissolved solids - 1500

    They recommended draining the pool and starting from scratch. Water is expensive in Texas but I will do what I have to do. I haven't started the BBB method but was planning to before the return of the green pool.

    Any help / suggestions is greatly appreciated.
    15,000 gallon quartz finish, in-floor cleaning, Jandy CV580 cartridge filter, Jandy pump, Jandy heater, chlorine feeder and ozone

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    Isaac-1's Avatar
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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    If there test results are to be trusted, draining the majority of the water is the only way you will get CYA down to a manageable level, my suggestion is to read the pool school link in the upper right a couple of times, drain, stop following pool store advice, and join us here with the BBB method, it will be cheaper for you and your pool will have less problems.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
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    frustratedpoolmom's Avatar
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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    Ditto...
    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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    Smykowski's Avatar
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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    Welcome. We can help you, but only if you help yourself. Read pool school, get a good kit and stop going to the pool store, then post a set of test results and we'll start cooking with gas.
    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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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    Thanks. BTW, how did the CYA get so high?? It is a new pool and just filled last May.
    15,000 gallon quartz finish, in-floor cleaning, Jandy CV580 cartridge filter, Jandy pump, Jandy heater, chlorine feeder and ozone

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    Smykowski's Avatar
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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    How are you chlorinating the pool, tabs, powder?
    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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    frustratedpoolmom's Avatar
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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    CYA is included in tablets (pucks) and some forms of granular chlorine. It's not uncommon for pool stores to advise owners to "shock their pool weekly". Throw in 2 bags or so of Dichlor (CYA containing granules) and voila - it can rise really quickly - especially if tablets are the primary source of chlorine. Also if they tell you to add stabilizer at the beginning of the season - I've seen stores tell customers that a CYA of 100 is fine and/or not EVEN TEST IT and sell Stabilizer to their customers.
    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: PLEASE HELP! CYA off the chart, green pool, and need adv

    Quote Originally Posted by Smykowski
    How are you chlorinating the pool, tabs, powder?
    Pucks and ozone.
    15,000 gallon quartz finish, in-floor cleaning, Jandy CV580 cartridge filter, Jandy pump, Jandy heater, chlorine feeder and ozone

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    Smykowski's Avatar
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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    The pucks caused your CYA to skyrocket. Most people here use either plain bleach or an SWG for exactly that reason.
    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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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    Quote Originally Posted by Smykowski
    The pucks caused your CYA to skyrocket. Most people here use either plain bleach or an SWG for exactly that reason.
    Figured. Definitely going to BBB with the fresh water. Do I even need to add stablizer to start??
    15,000 gallon quartz finish, in-floor cleaning, Jandy CV580 cartridge filter, Jandy pump, Jandy heater, chlorine feeder and ozone

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    frustratedpoolmom's Avatar
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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    Yes, at least 30ppm, depending on your chlorine source. If you plan to use liquid, go with 50.
    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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    Smykowski's Avatar
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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    You will need CYA in your pool. How much depends on several factors (can you put your pool/equipment specs in your signature?).

    First off, pool store tests are suspect, but anecdotally, they're especially bad at the CYA test. You may be better off with a partial drain than a full drain, but we won't know until we have test results that we can trust.

    Head over to pool school and read as much as you can, and we really, really suggest getting a good test kit.
    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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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    Quote Originally Posted by Smykowski
    You will need CYA in your pool. How much depends on several factors (can you put your pool/equipment specs in your signature?).

    First off, pool store tests are suspect, but anecdotally, they're especially bad at the CYA test. You may be better off with a partial drain than a full drain, but we won't know until we have test results that we can trust.

    Head over to pool school and read as much as you can, and we really, really suggest getting a good test kit.
    Thanks. I have been reading and reading. I just bought a TF-100 today. As soon as I get it, I'll test and post the results. I am hoping not to have this happen again. I'll add my specs now.
    15,000 gallon quartz finish, in-floor cleaning, Jandy CV580 cartridge filter, Jandy pump, Jandy heater, chlorine feeder and ozone

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    Smykowski's Avatar
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    Re: PLEASE HELP! CYA off the chart, green pool, and need adv

    Given the likelihood of extremely high CYA, I would suggest doing the CYA test with half pool water and half tap water and multiplying by two. It'll save on reagent and give you a better idea of where you're at (over 100 could be anything).

    Read pool school while you're waiting for the kit to arrive. It will help with the discussion that is sure to follow. Don't be discouraged if it's too much to take in at once. Most people get more out of it on the third and fourth read throughs (me included).
    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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