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Thread: What is my shock level supposed to be?

  1. Back To Top    #1

    Join Date
    Jul 2007
    Location
    Ohio
    Posts
    47

    What is my shock level supposed to be?

    My pool has been sparkling clear all summer, I have been just tweaking my Autopilot setting keeping between 3-5 FC levels, and all has been well. 5 days ago it got cloudy, I shocked it (15) but didn't keep it there though, and today it is still cloudy. I thought my shock level was 15, but am I using the Pool Calculator right? It is saying 23 is my shock level? Here are my numbers:

    FC - 3.5
    TC - 3.5
    PH - 7.6ish
    TA - 100
    CYA - not sure, out of reagent, it was 60 on 8/2 and I added about 2 lbs of CYA
    Temp 86

    It may have started to get cloudy when I added the CYA... not positive though.

    So is it really 23? If so, I will get it up there and get this thing cleaned up!


    Thanks, Chuck
    16X24X40 Grecian L Vinyl Pool - Dig 9/4/2007 and first swim 9/21/2007
    Located in Ohio Approx 27K gallons
    Pentair Whisperflow 1 HP 2-speed Pump
    Hayward Sand Filter Jandy AE2500 Heat Pump
    Autopilot Dig-220 w/sc-60 cell

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: What is my shock level supposed to be?

    2 lbs of CYA in 27,000 gallons would raise the CYA level by almost 10. If it was 60 before, then it should be about 70 now.

    With a CYA level of 70, your shock level is around 20.
    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

  3. Back To Top    #3

    Join Date
    Jul 2007
    Location
    Ohio
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    Re: What is my shock level supposed to be?

    Jason, thank you very much. I am getting used to the calculator, it is a great tool.

    --Chuck
    16X24X40 Grecian L Vinyl Pool - Dig 9/4/2007 and first swim 9/21/2007
    Located in Ohio Approx 27K gallons
    Pentair Whisperflow 1 HP 2-speed Pump
    Hayward Sand Filter Jandy AE2500 Heat Pump
    Autopilot Dig-220 w/sc-60 cell

  4. Back To Top    #4

    Re: What is my shock level supposed to be?

    Hi Chuck1971
    I am new here, and I am reading through this and I mean no direspect, I am trying to learn so I can understand for my own sake. My question is why would you add CYA if your level was 60? What am I missing?

    by the way-1971 was a great year!
    Sharkline 18x33 54"AG, Hayward 1.5hp Perflex D.E., TF-100 test kit

    Finally....a pool of our own!

  5. Back To Top    #5
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: What is my shock level supposed to be?

    Quote Originally Posted by kidsluv2swim
    Hi Chuck1971
    I am new here, and I am reading through this and I mean no direspect, I am trying to learn so I can understand for my own sake. My question is why would you add CYA if your level was 60? What am I missing?

    by the way-1971 was a great year!
    Recommended CYA levels for a SWCG is 60-80 ppm
    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

  6. Back To Top    #6
    MikeInTN's Avatar
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    May 2007
    Location
    Middle Tennessee
    Posts
    1,335

    Re: What is my shock level supposed to be?

    Dangit FPM, you beat me to it!

    Although I'll add that the higher CYA level helps prolong the life of the SWCG cell.
    24' x 52" AGP - approx 13,500 gallons
    Pentair Optiflo 1 hp/2sp pump w/ Swimpro Voyager 150 sq ft cartridge filter
    Intex 8110 SWCG
    "Fear the Schnauz!"

  7. Back To Top    #7

    Join Date
    Jul 2007
    Location
    Ohio
    Posts
    47

    Re: What is my shock level supposed to be?

    Exactly... See I can read and learn how to do this correctly!!!!

    I bought the largest cell possible for the SWG also, knowing it should last longer.

    --Chuck
    16X24X40 Grecian L Vinyl Pool - Dig 9/4/2007 and first swim 9/21/2007
    Located in Ohio Approx 27K gallons
    Pentair Whisperflow 1 HP 2-speed Pump
    Hayward Sand Filter Jandy AE2500 Heat Pump
    Autopilot Dig-220 w/sc-60 cell

  8. Back To Top    #8

    Re: What is my shock level supposed to be?

    You guys know everything, that is why I love this forum!
    Sharkline 18x33 54"AG, Hayward 1.5hp Perflex D.E., TF-100 test kit

    Finally....a pool of our own!

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