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Thread: Shock needed for pool opening

  1. Back To Top    #1

    Join Date
    May 2014
    Location
    KY
    Posts
    17

    Shock needed for pool opening

    Hi, I'm in my 2nd yearr of trouble free pool and just opened today. FC = 4; CC = 0; PH = 7.6; TA = 80 & CYA = 50. This seems to be where I settled out last year. I did bring up to shock when I closed and other numbers good My FC was 11 or so when I closed up last fall. My water looks good but I am curious if I need to bring Chlorine up to shock level or do I just adjust and go forward from hear. Any advice would be appreciated!

    Thanks!
    Steve

    BBB method, above ground, 18,311 gal. 1 hp.
    18,311 gal. 17 x 32, vinyl, in-ground, 1/2 hp hayward pump

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
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    Tucson, AZ
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    37,389

    Re: Shock needed for pool opening

    If the water is clear and no sign of algae, and your FC did not drop to 0, you may be in the clear

    For my own personal gut, I would raise the FC to shock level (or at least 10ppm) and Perform the Overnight Chlorine Loss Test to be 100% sure.
    Jason, TFP Moderator
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  3. Back To Top    #3

    Join Date
    May 2014
    Location
    KY
    Posts
    17

    Re: Shock needed for pool opening

    Thank you for the advice. I have the same gut feeling. I'll raise FC and do the overnight test to be sure.
    18,311 gal. 17 x 32, vinyl, in-ground, 1/2 hp hayward pump

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