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Thread: "Shocking" the pool as an alternative?

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    Join Date
    Dec 2015
    Location
    San Jose, CA
    Posts
    31

    "Shocking" the pool as an alternative?

    Hello
    I clean my pool on every Sat by myself (brushing, skimmer, testing and adding chemical etc), and I have to be out of town in early July for two weeks (considering of the temp in San Jose, CA at that time). Let's just say that I couldn't find a good local pool guy to come to my house during my absence. I definitely don't want a GREEN pool when I come back, but wonder if I could raise the FC to a shock level, and let the pool consume the FC by itself in the next 14 days. Is this possible or practical?

    I tried it before that maintaining a regular FC level and leaving the pool there for a week in summer is fine, I have the solar cover and under water robot, and run pump/filter 4hrs day. But things will go bad quickly after 7/8 days, so this time, I like to give some "FC buffer".

    • E.g., Based on the CYA right now, I raise the FC to 25+, then two weeks later, I assume FC may drop to ~4-5, which might be still OK to prevent algae growing. Then I just come back and take it over.


    The latest water test:
    FC: 6
    CC: ~0
    PH: 7.4
    TA: 30
    Hardness: 20
    CYA: 45

    Thank you very much for your thoughts!

    Regards,

    Kevin
    10,200Gals, 10X34, 3'-4'4'' deep, rectangle in-ground vinyl pool; Solar cover;
    3/4HP Advantage pump; CC150 Pentair cartridge filter;
    NC22 SmartPool Smart-Kleen robot; and a 2-wheel PoolCleaner of HAYWARD
    Tailor K2006 test toolkit;

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    20,296

    Re: "Shocking" the pool as an alternative?

    The problem is that chlorine loss due to sunlight is a percentage, not a fixed 2 or 3 ppm per day.
    Check this graph I lifted from Pool Water Chemistry
    You'll see it stops at 10 ppm. But you can clearly see that as the concentration increase, the loss slope gets steeper. Jacking FC to 25 will leave you at 12 or less after the first day. No way you'll last two weeks.

    Solution: make sure your pool is absolutely perfect before you leave. Add polyquat 60 algaecide a few days before. buy or beg a few trichlor pucks and buy a cheap floater and leave it in the pool.
    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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    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    10,152

    Re: "Shocking" the pool as an alternative?

    (Psssssssssssssssssssssst..............) got a friend who can stop by?
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

  4. Back To Top    #4

    Join Date
    Dec 2015
    Location
    San Jose, CA
    Posts
    31

    Re: "Shocking" the pool as an alternative?

    Thank you guys, I will try my best.
    10,200Gals, 10X34, 3'-4'4'' deep, rectangle in-ground vinyl pool; Solar cover;
    3/4HP Advantage pump; CC150 Pentair cartridge filter;
    NC22 SmartPool Smart-Kleen robot; and a 2-wheel PoolCleaner of HAYWARD
    Tailor K2006 test toolkit;

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