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Thread: Not certain on my fill gallons, not sure how much to add to begin with

  1. Back To Top    #1

    Join Date
    May 2016
    Location
    Rochester, NY
    Posts
    3

    Not certain on my fill gallons, not sure how much to add to begin with

    First year pool was opened May 13th, was close right after being built. Adding liquid chlorine twice a day since opened and waiting for the TF-100 to arrive.

    The TF-100 arrived yesterday but didn't have time to test.

    My numbers, 30 mins after adding chlorine today:
    FC 2.5
    CC 0.5
    PH 7.2
    TA 90
    CH 150
    CYA 0

    Know that CYA needs to be brought up so we don't keep burning chlorine. Going to the store to get some stabilizer today.

    My issue is I don't know the exact fill amount of my pool. I am guessing, and so is the PB. Should I put in 3/4 of the recommended and see where I am in a week?

    Also, since I need to adjust both PH and TA it looks like I can just add washing soda to bring up both. Is that recommended, or should I bring up TA first, with baking soda, then adjust PH? What percentage, 50 or 75, of the recommended to start for either washing soda or the baking soda? How long do I have to wait for these to dissolve and be accurate?

    Thanks in advance
    approx 18k, 16x33 free form vinyl IG. Hayward Tristar VS pump, Reliant sand filter w/6-way valve, Hayward H250D heater, TF-100 test kit

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    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
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    8,995

    Re: Not certain on my fill gallons, not sure how much to add to begin with

    How did you determine how much chlorine to add and what percentage is it? Play with poolmath------put in those numbers and see what effect it has on X amount of gallons.

    Example: 40 ounces of 8.25% will raise 13,500 gallons by 2 FC
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
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  3. Back To Top    #3

    Join Date
    May 2016
    Location
    Rochester, NY
    Posts
    3

    Re: Not certain on my fill gallons, not sure how much to add to begin with

    I have been adding about .5 gallons of 12.5%.

    But I see what you are saying. Will give that a shot. Thank you
    approx 18k, 16x33 free form vinyl IG. Hayward Tristar VS pump, Reliant sand filter w/6-way valve, Hayward H250D heater, TF-100 test kit

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