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Thread: I'm thinking she's about to turn green on me

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    I'm thinking she's about to turn green on me

    Not trying to thread-jack, but having a similar issue.
    Topic split. If there is the slightest chance that you might be hijacking, simply start a new topic. JasonLion

    Looking at my pool yesterday, I'm thinking she's about to turn green on me. Quick check confirms there is NO chlorine in my pool. Controller shows no faults/codes. I jack the generator to 100%, wait an hour, and do a check right from the return....no chlorine being produced.

    Again, no faults/codes displayed.

    I don't have model information in front of me, but hoping you can shed some light as to where/how to start troubleshooting my generator? It's worked flawlessly up until now. I added chlorine manually last night and will continue to until I get this resolved.

    Anyone help?
    18x36 In-ground Vinyl, 24,000 gallons.
    Sand Filter, 1hp Hayward.
    SWG
    Polaris 280

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    Re: swg not working

    down here we find the easiest way to check a swg is working is to remove the cell from the housing, leave the leads connected, get a bucket of your pool water, drop your cell into the bucket and is covered fully by water and switch on your swg, make sure your pump is switched off first, if the cell is working you will see the chlorine gas cloud coming off the plates. if so then your swg is working.
    16,000lts Fibreglass, Magna Mineral Pool Water
    Jandy CV340 Cartridge filter, Zodiac TRi SWC, Z4 iAqualink, Jandy Laminar Jets, Solar Heating, Spa Jets with Jandy 1.5hp Epump operating everything.

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    JasonLion's Avatar
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    Re: I'm thinking she's about to turn green on me

    Your SWG is almost certainly just fine and your problem is most likely a problem with your chemical balance. You should post a complete set of water test results. You should also get some chlorine into the pool manually as quickly as possible.

    malcolmb5325, hydrogen gas, not chlorine gas. Chlorine gas is produced, but it reacts with the water very quickly and does not make it out of the cell. Only the hydrogen gas, which is also produced, makes it out of the cell.
    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: I'm thinking she's about to turn green on me

    Here's the data:

    Temp:85F
    Cell Voltage:-25.30v
    Cell Current:-6.64
    Cell Turned Off: All values go to 0
    Output:25%
    Salinity:2900
    Software Revision Level:4.10
    Display Revision:3.12
    Product Name:Aqua Plus

    CYA:50
    TA:80
    pH:7.2
    18x36 In-ground Vinyl, 24,000 gallons.
    Sand Filter, 1hp Hayward.
    SWG
    Polaris 280

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    Re: I'm thinking she's about to turn green on me

    What is the required salt level for the pool. I know from reading manual for a friend's Jandy Aquapure that it will shut down if salt is low or high. No idea if your is similar.

    I do note that you have room to both boost your CYA (to help hold chlorine in sunlight) and to raise the % setting. Check your manual for CYA range, TRP suggestion is 70 - 80, Jandy Aquapure was 85 is sunny Tx and Fla. Not sure if you are south enough to use Fla levels.
    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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    Butterfly's Avatar
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    Re: I'm thinking she's about to turn green on me

    Quote Originally Posted by PhotoEd
    Here's the data:

    Temp:85F
    Cell Voltage:-25.30v
    Cell Current:-6.64
    Cell Turned Off: All values go to 0
    Output:25%
    Salinity:2900
    Software Revision Level:4.10
    Display Revision:3.12
    Product Name:Aqua Plus

    CYA:50
    TA:80
    pH:7.2
    Also, what are:
    FC
    CC
    CH
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    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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    JasonLion's Avatar
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    Re: I'm thinking she's about to turn green on me

    Your voltage and current are normal, which supports the idea that the cell is working correctly.

    I suspect you have a low level algae problem. The SWG can never quite kill all of the algae, but it does keep it sufficiently in check that you can't see an obvious algae problem. You can confirm this by doing an overnight FC loss test.

    Your CYA level is too low for use with a SWG, it should be around 70-80, but I would wait on correcting that until you are sure you don't have algae. Algae is easier to fight at a lower CYA level.

    I suspect that rising water temperatures plus the relatively low CYA level let FC get too low and allowed the algae to get a foothold. Even a tiny amount of algae, too little to see, can then drive the FC level to zero even when the SWG is working correctly.
    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: I'm thinking she's about to turn green on me

    Jason, if that is the case, it's the first time it's happened in the 3 years I have owned the pool. I have 2 decades of pool chemistry experience, but maybe the 4th of July just put too much pressure on my chemistry. I'll treat it as if the SWG is working and continue to treat it as an algae issue.

    Thanks for your time,

    Ed
    18x36 In-ground Vinyl, 24,000 gallons.
    Sand Filter, 1hp Hayward.
    SWG
    Polaris 280

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    Mod Squad Bama Rambler's Avatar
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    Re: I'm thinking she's about to turn green on me

    Running the OCLT is the best and easiest way to tell if it's organics.
    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
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