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Thread: New to Pool and got TF-100 results, now what to do first?

  1. Back To Top    #1

    Join Date
    Jun 2011
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    Mississauga, Ontario
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    New to Pool and got TF-100 results, now what to do first?

    Hi everyone, I am new to the forum and have been reading and learning a lot about pools and pool chemistry.

    I am a total noob when it comes to pool. We just got a lazy L shaped vinyl pool (SWG) installed. I am trying to get the volume info from out pool contractor. In the meantime, my rough calculation says 24,000 gallons.

    I had a lot of problem keeping my chlorine level in check and decided to no longer listen to the pool store.

    The TF-100 kit arrived and here are my results (I hope I did the tests correctly).

    I need help as the numbers are out of whack when comparing to the article on "water balance for SWGs":

    FC = 2 ppm
    CC = 0
    pH = 8.2
    TA = 180
    CH = 230
    CYA = can't get the dot to disappear

    What do I need to do first? bring the pH and TA down?

    Cheers

    Thanks in advance
    lazy L vinyl salt water inground pool (24,767 US Gallons)
    1HP Pump Sta-Rite Max-E-Pro Pump
    300 sq ft Sta-Rite Cartridge Filter

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    Butterfly's Avatar
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    May 2007
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    South Carolina
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    Re: New to Pool and got TF-100 results, now what to do first

    Welcome

    First lower your pH to 7.2.

    Add enough CYA to reach 60 and test/adjust after one week.

    What is your salt level?

    You can use liquid chlorine/bleach to keep FC level until SWG can keep up.
    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.

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    JasonLion's Avatar
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    Silver Spring, MD
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    Re: New to Pool and got TF-100 results, now what to do first

    The first thing is to lower the PH down to 7.2 right away. Both PH and TA are high. Lowering PH to 7.2 will start lowering TA. For use with a SWG you will need to continue to work on lowering TA.

    With a SWG, the recommended CYA level is between 70 and 80. Unless you already added some CYA in the last week, you should start working on raising CYA up to that range. Remember that it is easy to raise CYA, but difficult to lower it. Because of that it is best to aim for a lower CYA level to start, 50 or 60, work on that, give it a week to stabilize, and then continue adjusting from there.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  4. Back To Top    #4

    Join Date
    Jun 2011
    Location
    Mississauga, Ontario
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    6

    Re: New to Pool and got TF-100 results, now what to do first

    Quote Originally Posted by Butterfly
    Welcome

    What is your salt level?

    You can use liquid chlorine/bleach to keep FC level until SWG can keep up.
    My salt level is 3120 ppm. I have been using a lot of liquid chlorine to keep up.

    I'm going to go out and get some MA to lower the pH. I added some CYA over 2 weeks ago. Should I add more CYA or give it another week?

    Thanks
    lazy L vinyl salt water inground pool (24,767 US Gallons)
    1HP Pump Sta-Rite Max-E-Pro Pump
    300 sq ft Sta-Rite Cartridge Filter

  5. Back To Top    #5
    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
    Posts
    37,879

    Re: New to Pool and got TF-100 results, now what to do first

    Since it has already been two weeks since you last added CYA, you should go ahead and add more.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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