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Thread: First Opening after First Closing

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    Join Date
    May 2015
    Location
    La Grange, KY
    Posts
    37

    First Opening after First Closing

    Hey Everyone,

    This was my second time opening my pool, but the first after I closed it myself. The first opening was after the previous owners closed, and I opened it to a slightly green pool that took about 5-6 days of SLAMing before passing the Overnight test.

    This year, I opened a little differently. I left the cover on while I filled the pool. While filling, I hooked up the filter and pump and as soon as the water was at the right level, I turned on the pump and added a gallon of bleach. Keep in mind that I hadn't been able to see the water yet. About 3-4 hours after adding the first gallon of bleach, I added another and kept the pump running. I let it run overnight and added another gallon of bleach in the morning. All of this was done assuming that I would open up to another green pool, so I figured I'd keep the sun off of it as much as possible until we were able to get the cover off.

    Anyway, around noon on the third day, we removed the cover and to my surprise, the water looked just as we had left it last fall, perfectly clear. I tested the water and got:

    FC: 16
    CC: 0
    pH: 8.0
    TA: 100
    CYA: 30 (somewhere between 30-40)


    I say all this not to brag (well, maybe a little ), but to see if this is normal. I typically read on here about opening to a green pool and that was my only prior experience as well. I don't think I did anything special at closing; cleaned the pool well and raised FC to SLAM level, that's it. I didn't expect this, so I'm thinking there's something I'm missing. Too good to be true, I guess.

    Just wanted to hear from some of you that have good experiences opening a pool.

    Thanks,
    K13
    Kevin

    Sharkline Venture 16,000 gallon AG. SwimPro Voyager cartridge filter. Taylor K-2006 test kit.

  2. Back To Top    #2
    Texas Splash's Avatar
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    Jun 2014
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    South-Central Texas, Marion/San Antonio
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    12,934

    Re: First Opening after First Closing

    The transition from winter closing to opening is different for everyone, but it sounds as though you caught the algae before it did any real damage. It was good that you increased immediately to an FC of 16 (SLAM level) to make sure you killed the algae and passed all 3 SLAM criteria. Of course your pH is probably just showing as elevated because of the high FC. At this point, you appear to have done very well.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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    duraleigh's Avatar
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    Apr 2007
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    Sebring, Florida
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    30,077

    Re: First Opening after First Closing



    Excellent! Pop open the cold ones! Happy Swimming!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  4. Back To Top    #4

    Join Date
    May 2015
    Location
    La Grange, KY
    Posts
    37

    Re: First Opening after First Closing

    Ahhh, thank you. I forgot that the pH test is not accurate at high chlorine levels. I was headed to the store to grab some muriatic acid. I'll wait until the FC comes down to test again.

    I haven't passed the OCLT yet; today was the first day I've tested. I'm pretty confident, but wish me luck tonight.
    Kevin

    Sharkline Venture 16,000 gallon AG. SwimPro Voyager cartridge filter. Taylor K-2006 test kit.

  5. Back To Top    #5
    Mod Squad pooldv's Avatar
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    Aug 2012
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    DFW, TX
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    23,994

    Re: First Opening after First Closing

    Nice work! If not tonight then soon! With all this dang cold and rain we can't swim anyway!
    TFP Moderator
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