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Thread: Priorities with new water

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    Join Date
    May 2014
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    Lake Jackson, Texas ( Houston)
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    Priorities with new water

    Just emptied and refilled last Friday, slammed for a couple days just to make sure my algae is gone. Looks beautiful.

    Just got my CYA up in the last 2 days (added 1 pound yesterday), but the pH always seems to be 7.8 24 hours after I add muriatic to get it to 7.2.

    Today:
    FC 2.5
    pH 7.8
    CH 175
    TA 260
    CYA 25 - 30

    What should I be most worried about? In what order ( if any) should I add my 3+ quarts of muriatic, 14 lbs of calcium chloride, 27 oz of stabilizer?

    Thanks!
    20,000 gallons in-ground, plaster, built in '85
    Sand filter specs TBD
    Pump info TBD
    Solar Breeze skimmer, TF100

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    Casey's Avatar
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    Apr 2007
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    SW PA
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    Re: Priorities with new water

    Bring your pH down, wait 20 minutes. Add your CYA in a sock over the return. Add FC to get it up to at least 5ppm. Then you can add your calcium.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

  3. Back To Top    #3

    Join Date
    May 2014
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    Lake Jackson, Texas ( Houston)
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    Re: Priorities with new water

    Thanks, but why the high chlorine level?
    20,000 gallons in-ground, plaster, built in '85
    Sand filter specs TBD
    Pump info TBD
    Solar Breeze skimmer, TF100

  4. Back To Top    #4
    y_not's Avatar
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    Jul 2012
    Location
    Redmond, OR
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    Re: Priorities with new water

    To account for loss to UV and outgassing. You'll loose anywhere from 0.5ppm to 2-3ppm per day, depending on many factors; heat, UV intensity, organics that find their way in, and usage.

    You need to read up on the CYA to FC relationship in Pool School.
    The minimum for your CYA is 2ppm, and you never want to drop below that, lest you have to SLAM it.
    Personally, I would never let it dip below 2.5ppm.

    I would also work on getting your TA down over time, as that high TA is causing a rapid pH rise.

    Thanks for reading... - Tony
    Da' Pool: Intex 15'x42" 3284gal AGP EasySet (Inflatable Ring) - (Summer 2014: 27' round EW /w 6.5' deep end @ 22,500gal)
    Pump & Cart Mod: 1000gph Cart. 5ft² - 2 nylons, 24/7 OP. Traps bugs/bits, lasts longer/cleans easier = Happier Pool Owner!!
    The Bible for a "Trouble Free Pool" life = PoolSchool, the BBB method a TF100 test kit(Recommend Kits Compared). - Cleaning a Sand Filter
    Water looks like GLASS, if yours doesn't...SLAM IT! Feels nice and never been happier!!! :D

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    Butterfly's Avatar
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    May 2007
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    South Carolina
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    10,045

    Re: Priorities with new water

    Quote Originally Posted by mswarny View Post
    Thanks, but why the high chlorine level?
    With 30ish CYA, FC should be maintained between 2 and 6, and never below 2. You reported 2.5, which means it's time to get some more FC in there! I suggest you daily add to reach 6 FC to give you some more wiggle room.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

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