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Thread: How much shock should you add for the first time.

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    How much shock should you add for the first time.

    I am brand new to this site and have read as much as I can. We just opened the pool and have run the filter overnight. The cc is at 0 which I know is normal. I believe the next step is to add shock. How do you know how much to add and how long should we wait before testing the other chemicals?
    Thank you in advance.
    18 k, vinyl, SWG, Polaris

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    Charlie_R's Avatar
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    Re: How much shock should you add for the first time.

    Welcome to the forum!

    When you say shock, most of us here think of the process of "shocking" a pool. Most here use liquid chlorine, sodium hypochlorite, otherwise known as bleach.

    Can you post a full set of test results? We can go from there for any advice needed.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

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    Re: How much shock should you add for the first time.

    FC-0 PH-6.8 and CH100
    18 k, vinyl, SWG, Polaris

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    Mod Squad woodyp's Avatar
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    Re: How much shock should you add for the first time.

    With a SWG, do you already have your salt at the correct level and also cya at 70 to 80? If so, add enough plain old beach to bring FC to 4 or 5 so your SWG can take over without much strain. A gallon and a half should do you. That PH needs to crawl into the 7.4ish range as well. You list no reading for your TA level. Welcome to the forum and enjoy pool school.
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    Re: How much shock should you add for the first time.

    Thank you so much for your help. I don't think my husband gave me the TA level, we thought first step was the shock/bleach. Wish I was a chemistry major!!!!
    18 k, vinyl, SWG, Polaris

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    Re: How much shock should you add for the first time.

    Welcome to the forum.

    Have you found Poolmath on our site that will help you figure your dosages?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Mod Squad pooldv's Avatar
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    Re: How much shock should you add for the first time.

    Welcome to TFP!

    TFPC does require a little reading up front to get there. But, once you do you can look forward to many years of sparkly pool swimming that is troublefree.

    Start here,
    TFPC for Beginners
    ABC's of Pool Water Chemistry
    Water Balance for SWCGs

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    Re: How much shock should you add for the first time.

    We had to fill the pool with well water and the water is too cold for the SWG to give a reading. Any suggestions on what to,put in first?
    18 k, vinyl, SWG, Polaris

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    Patrick_B's Avatar
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    Re: How much shock should you add for the first time.

    If you can give a fresh set of test numbers, we will be glad to answer. At least the primary ones...

    FC
    CC
    pH
    TA
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    Re: How much shock should you add for the first time.

    FC-3
    Ph6.8
    TA-80
    CC-need 5 more degrees to get a reading
    CYA-25
    CH-200-300
    18 k, vinyl, SWG, Polaris

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    Defgufman's Avatar
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    Re: How much shock should you add for the first time.

    I'm guessing 2 gals of 8.25% bleach, but pool math would answer better
    Inground 13,200 gal Vinyl, Pentair 3/4 hp pump, Pentair Sand Dollar filter, Polaris 280

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    Re: How much shock should you add for the first time.

    Thanks,I'll plug it in
    18 k, vinyl, SWG, Polaris

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    Re: How much shock should you add for the first time.

    Quote Originally Posted by obschilling@gmail.com View Post
    FC-3
    Ph6.8
    TA-80
    CC-need 5 more degrees to get a reading
    CYA-25
    CH-200-300
    FC needs to be brought up. Also temp won't affect CC reading.
    Your CYA is low 30-80 if you are slamming about 30 is good and your PH needs to be 7.2-7.6 slamming 7.2 is good range is low.
    Lisa
    Intex AG vinyl 15' x 48" 4,300 gallons due to skimmer install, Krystal Clear SF pump combo 2800 GPH, Krystal Clear SWG, Pool Blaster Max vacuum, Hayward thru the wall skimmer, TF 100 test kit with speed stir, K 1766 Taylor salt test, My SLAM Process

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    Re: How much shock should you add for the first time.

    Here is a link for recommended levels http://www.troublefreepool.com/conte...mmended-levels
    Lisa
    Intex AG vinyl 15' x 48" 4,300 gallons due to skimmer install, Krystal Clear SF pump combo 2800 GPH, Krystal Clear SWG, Pool Blaster Max vacuum, Hayward thru the wall skimmer, TF 100 test kit with speed stir, K 1766 Taylor salt test, My SLAM Process

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    Mod Squad pooldv's Avatar
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    Re: How much shock should you add for the first time.

    Chlorine is always #1 and PH is #2. Everything else can be worked more slowly and managed as you go.

    The Chlorine CYA Chart tells you what the min FC level is for your CYA level. Never let the FC level fall below the min or algae will start to grow. Keep PH between 7.5 and 7.8. Everything else can be managed.
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