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Thread: Just opened today - testing results, please advise

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    Join Date
    Jun 2011
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    Hampton Roads area, VA
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    Just opened today - testing results, please advise

    Greetings once again TFP!

    Just opened my pool today. Here are my numbers. I would love feedback on what to do next.

    FC - 0
    CC - 0
    pH - <6.8
    TA - 40
    CH - 50
    CYA - 0 (I realize it's probably not truly 0, but when I did the test it never clouded up)

    I was unsure what to tackle first considering everything seems to need work. After reading a good number of posts I went with getting my pH up. Since I don't really know it's exact number (other than <6.8) I took a guess at about 6.6ish (hoping not to over shoot.. it could be less than that) and added 100oz by volume Borax, as per the Pool Calculator, to get it to 7.5. The PC also states that by doing this my TA will rise to a healthy 56, so that's good.

    First question: how long should I wait to retest the pH? I've read 30 minutes but would like to confirm.
    Second question: should I get my CYA up to about 30 - 40 BEFORE shocking? Or can these be done at the same time? (i.e. put in enough stabilizer to get CYA to 30 and, at the same time, enter enough bleach to shock as if the CYA was already at 30).

    It's always great to have the support of the TFP crew!

    Thanks!
    12.5K gal, Pentair Plus DE filter (FNSP48, 120gpm flow rate), IG, Vinyl, 1 HP WhisperFlo pump, Polaris 280 cleaning robot with booster pump

    Pool store!? We don't need no stinkin' pool store...

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    Re: Just opened today - testing results, please advise

    30-60 minutes for pH result.

    You nailed it on the CYA/chlorine. Put the CYA in, assume it's there and shock based on the calculated dosage. ( I would suggest 30 ppm)

    Nice work!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Jun 2011
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    Hampton Roads area, VA
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    Re: Just opened today - testing results, please advise

    Thanks for the rapid response, duraleigh (wow!).

    I'll give it a go and report back with any further issues.

    One more fast question while I'm here: I do have a vinyl liner, as I state in my signature, but I have cement around the pool. Do I need to worry about Calcium at all? Is there EVER a level of Calcium that's too low for my pool type? I've read here more than once that there are only 2 reasons to worry about Ch for a vinal pool,

    1) manufacturers warranty requires a minimum Ch
    2) foaming around the jets

    but since I have cement AROUND the vinyl I figured I'd ask just to be sure.


    (Love it here at TFP, just sayin'. BTW, I'm also a fan of your TFTestKits, Dave. )
    12.5K gal, Pentair Plus DE filter (FNSP48, 120gpm flow rate), IG, Vinyl, 1 HP WhisperFlo pump, Polaris 280 cleaning robot with booster pump

    Pool store!? We don't need no stinkin' pool store...

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    Re: Just opened today - testing results, please advise

    I assume you mean the horizontal cement decking and there is no cement that is submersed in the water. So you can disregard CH.
    (unless it gets over 400 or so)

    Thanks for the nice words about the kit!!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  5. Back To Top    #5

    Join Date
    Jun 2011
    Location
    Hampton Roads area, VA
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    56

    Re: Just opened today - testing results, please advise

    Yes, that's what I mean. Concrete 'decking', as it were.

    I don't actually know what the pool itself is made of. It was here when we move in.
    12.5K gal, Pentair Plus DE filter (FNSP48, 120gpm flow rate), IG, Vinyl, 1 HP WhisperFlo pump, Polaris 280 cleaning robot with booster pump

    Pool store!? We don't need no stinkin' pool store...

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