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Thread: Not sure need to ask (Shocking Pool Question)

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    Join Date
    Aug 2012
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    Southern Indiana
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    Not sure need to ask (Shocking Pool Question)

    OK, so I want to be sure... My tf-100 tells me my CYA is about 50 (hard test to be satisfied with) but its close. My water is crystal clear... looks great. PH I keep about 7.5, and TA about 70...

    To the point over night FC test shows more than 1 ppm loss... I have never needed to shock this pool (well not while I have owned it and have used BBB for upkeep), but by the over night FL loss I guess I should... So I decided to raise the FC to 20 (20-25ish) and shock... well I had it up to 24 lastnight and woke to 11... it did rain so I will not rule that out... but not sure why it dropped so much... I have brought it back up to 22 and will chk it agn in a few hours. Any thoughts or ideas? Should I be shocking (thinking so)...

    thanks for any help.
    Pool 16 x 33.5 Foxx Pool with rounded corners 3.5 at each end and 5+ in the middle (16000 GAL)

    Equipment - 300 LB Hayward filter with a Pentair SuperFlo pump (3/4 HP). Also Hayward H series Heater and a dedicated jet for a Polaris 280 with a booster pump (3/4HP). Hayward Chlorinator CL200.

    Pool has Main Drain, 2 return Jets with 1 inch eyeballs, a skimmer with floating weir, and the dedicated Polaris jet. Also has a valve for the Waterslide.

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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: Not sure need to ask (Shocking Pool Question)

    You have a fine grasp of things and are doing just what you should be doing. Be sure to brush and really check for hiding places like inside ladder uprights and beneath steps.
    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: Not sure need to ask (Shocking Pool Question)

    Yeah, when you are unsure, always fall back to the principle that ONLY two things consume chlorine in your pool......the sun and organics in the water.

    You eliminated the sun, so you are left with an inescapable conclusion and need to shock to kill them all.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Join Date
    Aug 2012
    Location
    Southern Indiana
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    229

    Re: Not sure need to ask (Shocking Pool Question)

    thnx guys!!!

    Thanks for your response... I will keep at it... Going to brush agn today... Not much else hidden, its a sport pool so I have the steps in ground at each end (rounded edges) the pool is a FOXX Pool so it had that place above the liner where there special cover went (don't use it anymore) dirs. and things like to get in there... so I will focus on that but its not in the water its just below the coping.

    thanks agn!!!
    Pool 16 x 33.5 Foxx Pool with rounded corners 3.5 at each end and 5+ in the middle (16000 GAL)

    Equipment - 300 LB Hayward filter with a Pentair SuperFlo pump (3/4 HP). Also Hayward H series Heater and a dedicated jet for a Polaris 280 with a booster pump (3/4HP). Hayward Chlorinator CL200.

    Pool has Main Drain, 2 return Jets with 1 inch eyeballs, a skimmer with floating weir, and the dedicated Polaris jet. Also has a valve for the Waterslide.

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