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Thread: Shocking my pool, do I adjust PH while shocking?UPdate jul14

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    Join Date
    Mar 2007
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    Ontario
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    Shocking my pool, do I adjust PH while shocking?UPdate jul14

    Hello,
    I have brought my pool to shock level. My PH was 7.6 before I shocked.
    Now its off the charts. Do I adjust the PH now? Or wait till I am done shocking?
    Thanks
    16x32 inground vinyl 8' deep end
    1hp Northstar Pump, 20" Sand Filter
    6ft Double Lounge, 2 Aqua Lamps w/remote
    216sqft Sungrabber Panels (9- 2'x12') a little undersized

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    frustratedpoolmom's Avatar
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    May 2007
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    SWSuburban Chicago, IL
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    Re: Shocking my pool, do I adjust PH while shocking?

    Hi

    High schock levels can give false high ph readings. Don't do anything to your ph while shocking.
    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: Shocking my pool, do I adjust PH while shocking?

    Thank-You for the quick relply
    16x32 inground vinyl 8' deep end
    1hp Northstar Pump, 20" Sand Filter
    6ft Double Lounge, 2 Aqua Lamps w/remote
    216sqft Sungrabber Panels (9- 2'x12') a little undersized

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    Join Date
    Mar 2007
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    San Rafael, CA USA
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    12,082

    Re: Shocking my pool, do I adjust PH while shocking?

    In the future if you know you are going to be shocking at high levels, above 20+ ppm FC for example, you can lower the pH in advance, say to 7.2. Otherwise, don't worry about it. The pH does rise when the chlorine is added and the FC gets high and then it drops back down as the chlorine gets used up.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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    Mar 2007
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    Ontario
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    Re: Shocking my pool, do I adjust PH while shocking?UPdate jul14

    I had a small algae bloom. My CL is now holding overnight within 1ppm.
    I have not had the solar cover on since the bloom.
    Is it save to put the cover back on? The cover looks clean but I worry
    about transfering algea from the cover. I have it drying out on chairs and
    a step ladder. thanks
    16x32 inground vinyl 8' deep end
    1hp Northstar Pump, 20" Sand Filter
    6ft Double Lounge, 2 Aqua Lamps w/remote
    216sqft Sungrabber Panels (9- 2'x12') a little undersized

  6. Back To Top    #6

    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,082

    Re: Shocking my pool, do I adjust PH while shocking?UPdate jul14

    If you want to play it safe, raise the FC to the higher end of the range you usually deal with before putting on the cover -- say an FC around 15% of the CYA level. Then check the pool each day to see how it's doing and if it is reasonably holding FC. I don't think you're going to have a problem, but this will help make sure you don't. If the chlorine is holding and the water remains clear, then you've killed all the algae and haven't introduced any more of any significance.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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