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Thread: Quick Help on Opening Pool Balance of Water

  1. Back To Top    #1

    Join Date
    Jul 2010
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    North Bergen, NJ
    Posts
    172

    Quick Help on Opening Pool Balance of Water

    Hi folks, I'd appreciate it if you could briefly recommend what I should do to balance the water chemistry of my pool now that I have opened it for the first time this season. Also if you could suggest the order in which I adjust each one, it would be greatly appreciated as well. I remember doing this several years ago with your help, but I just need a quick simple refresher if someone has the time...thanks. I will post my specs below

    Pool Specs
    • Pool is inground 14x26 vinyl
    • approx 10,000gal
    • Pentair Salt Water IC 20
    • North NJ
    • Shocked Pool 4 days ago
    • cleared it up from green to crystal clear


    TF100 Kit
    Chemical readings are:
    • PH 7.2
    • Alk 150
    • FC 6
    • CC less than .05
    • CYA 50
    • CH 275
    • Borates: Unknown (but added 25lbs of Boric Acid last pool season)
    • Salt Reading from IC20 3900
    • Water temp 62



    Also on a side note, I realized that my shocking the pool upon opening didnt quite reach the shock levels, I think I only got it up to 111 or 12 FC during the process. but now that I have my readings and I noticed that my CC never even got up to .5 during the process and my pool has a clear blue sparkle to it....should I even bother wasting additional chlorine jugs and trying to shock it again? I used the Dollar Tree jugs and it didnt list the actual Chlorine concentration on the jugs but the label was identified as Home Goods.

    What do you think?....thanks for taking the time to assist
    Design 14x26 (10,000 gal) in ground vinyl pool, 2 Wide Mouth Skimmers, 3 Returns
    Equip 3.0 HP Pentair VS pump motor, 48 FNS Plus DE filter, IC20 SWCG, 400Btu NG Heater
    Extras Easy Touch Automation, Pentair LED Lite, Kreepy Krawl Racer pressure cleaner
    Water pH 7.5, Total Alk 90, Free Cl 4.5, Combine Cl 0.25, CYA 65, CH 275, Salt 4100ppm, Borates (Boric Acid) 50ppm

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    Richard320's Avatar
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    Jan 2010
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    San Dimas, CA (LA County)
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    18,768

    Re: Quick Help on Opening Pool Balance of Water

    Run an Overnight Chlorine Loss Test. If it passes, there's nothing growing in the pool. It looks like all you need is a little CYA to replace what was lost when you winterized. Hold off on adding that until you know whether a SLAM is needed or not.

    The low pH won't stay low for long with a SWG and your high TA. But there's nothing to do about it now.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    duraleigh's Avatar
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    Apr 2007
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    Sebring, Florida
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    Re: Quick Help on Opening Pool Balance of Water

    +1 what Richard said. Pass the OCLT and you are good to go.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  4. Back To Top    #4

    Join Date
    Jul 2010
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    North Bergen, NJ
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    Re: Quick Help on Opening Pool Balance of Water

    Ok thanks Richard and Dave, for the advice on the SLAM/overnight testing and CYA....

    In regards to the pH & TA e readings, if I understand you correctly, there is nothing I should do now to balance this out with chemical additions until my pH rises? If so, then what is the next move to lower TA?

    Or am I overall good with these numbers to swim in?

    Also, If I am grasping this stuff and understanding this correctly, would these numbers I have, be grounds for the perfect scenario use case for using Dichlor over regular bleach?

    I could basically kill 2 birds/1 stone by increasing the FC to Shock levels to be on the safe side..and also bring up my CYA to a more respectable level 10-12 ppm by adding approx. 32oz of Dichlor?

    Would you say this would be a good move?
    Design 14x26 (10,000 gal) in ground vinyl pool, 2 Wide Mouth Skimmers, 3 Returns
    Equip 3.0 HP Pentair VS pump motor, 48 FNS Plus DE filter, IC20 SWCG, 400Btu NG Heater
    Extras Easy Touch Automation, Pentair LED Lite, Kreepy Krawl Racer pressure cleaner
    Water pH 7.5, Total Alk 90, Free Cl 4.5, Combine Cl 0.25, CYA 65, CH 275, Salt 4100ppm, Borates (Boric Acid) 50ppm

  5. Back To Top    #5
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Quick Help on Opening Pool Balance of Water

    Quote Originally Posted by fudgebar View Post
    Ok thanks Richard and Dave, for the advice on the SLAM/overnight testing and CYA....

    In regards to the pH & TA e readings, if I understand you correctly, there is nothing I should do now to balance this out with chemical additions until my pH rises? If so, then what is the next move to lower TA?

    Or am I overall good with these numbers to swim in?

    Also, If I am grasping this stuff and understanding this correctly, would these numbers I have, be grounds for the perfect scenario use case for using Dichlor over regular bleach?

    I could basically kill 2 birds/1 stone by increasing the FC to Shock levels to be on the safe side..and also bring up my CYA to a more respectable level 10-12 ppm by adding approx. 32oz of Dichlor?

    Would you say this would be a good move?
    Yes, you can use dichlor to boost CYA, but remember it's very acidic, so you'll need to wait for the pH to rise before you add it. Right now, assuming the temperature is bearable, there's no reason not to swim in it.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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