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Thread: HELP!! Numbers way off

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    Join Date
    Nov 2007
    Location
    Katy, Texas
    Posts
    25

    HELP!! Numbers way off

    Ok... Whats wrong with my numbers... What am I doing wrong?

    Pool is 7 months old.
    My ph swings up every 2 days. I have to add 1/4 to 1/2 gallon of muratic acid to bring it back to normal levels.
    I can't keep my PH level, My TA is too low and I think my CA is too high.

    Can someone please help with possible solutions?

    Here are my latest numbers.

    Monday 7/14/08
    FC: 3
    TC: 3
    CC: 0
    PH 7.6
    ALK: 40
    CH: 350
    CYA: 35
    SALT: 3600

    Tuesday 7/15/08
    FC: 3
    TC: 3
    CC: 0
    PH: 8.0+
    ADDED 1/2 gal M. Acid and Super Chlorinated for 24 hrs.

    Thursday 7/17/08
    FC: 5
    TC: 5
    CC: 0
    PH: 7.6
    ALK: 30
    CH: 350
    CYA: 35
    SALT: 3600
    32x20 Freeform (17,500 gal.) Inground pool Depth: 3-4.5-8 ft. Pentair 400k BTU heater, 320 Chlorinator, 420 Cartirdge filter, Easytouch wireless controler. Whisperflo 2hp circ pump, One main drain. 12" raised spa w/6 jets. (spillover) 750 sq. ft. stamped concrete, 6 ton moss rock waterfall with weeping rock wall, Whisperflow 1hp. waterfall pump. PCC2000 in-floor cleaning system, WetEdge Primera Stone "Tahoe Coast"

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    duraleigh's Avatar
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    Apr 2007
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    Re: HELP!! Numbers way off

    Brent,

    Looking back at your previous posts, it seems your problems today are the same as months ago. You need to keep your pH down with acid (regardless of how much it takes) and you need to bring your CYA up to around 60ppm per the manufacturers recommendations.

    Am I missing a newer problem?
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Join Date
    Jul 2007
    Location
    Northern NJ
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    299

    Re: HELP!! Numbers way off

    You have quite a few levels that are out of whack. You can find all the information you need in the Pool School articles.

    1. Your CYA is too low. You are running a SWG and your CYA should be between 60-90. Check the guidelines for your manufacturer and make the adjustment. You can use the Pool Calculator to determine how much stabilizer you need to add.

    2. Your TA is too low. You need to add baking soda to adjust it. Your low TA is contributing to your wildly fluctuating pH. Use the Pool Calculator to determine how much baking soda to add. Your TA should be between 70-90.

    3. SWG's will make your pH rise. You will need to keep muriatic acid on hand to combat that.

    Take care of the CYA and TA problems and you may see the problem with your pH become easier to control.
    Nicole

    21' AGP (10,400g)
    Hayward PowerFlo Matrix dual-speed 1HP pump, 75 sq ft Waterway cartridge filter
    4G Liquidator, Aquabot POOL ROVER S2-40

  4. Back To Top    #4

    Join Date
    Nov 2007
    Location
    Katy, Texas
    Posts
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    Re: HELP!! Numbers way off

    I always have acid on hand, and add it every two days. Oh, the joys of pool ownership.

    Thanks for the replies.
    32x20 Freeform (17,500 gal.) Inground pool Depth: 3-4.5-8 ft. Pentair 400k BTU heater, 320 Chlorinator, 420 Cartirdge filter, Easytouch wireless controler. Whisperflo 2hp circ pump, One main drain. 12" raised spa w/6 jets. (spillover) 750 sq. ft. stamped concrete, 6 ton moss rock waterfall with weeping rock wall, Whisperflow 1hp. waterfall pump. PCC2000 in-floor cleaning system, WetEdge Primera Stone "Tahoe Coast"

  5. Back To Top    #5

    Join Date
    Nov 2007
    Location
    Katy, Texas
    Posts
    25

    Re: HELP!! Numbers way off

    One other thing,

    To bring up my TA from 30 to 100 the pool calculator suggests to add 289 0z. of baking soda. Is this correct?
    If so, where does one buy that much baking soda?
    32x20 Freeform (17,500 gal.) Inground pool Depth: 3-4.5-8 ft. Pentair 400k BTU heater, 320 Chlorinator, 420 Cartirdge filter, Easytouch wireless controler. Whisperflo 2hp circ pump, One main drain. 12" raised spa w/6 jets. (spillover) 750 sq. ft. stamped concrete, 6 ton moss rock waterfall with weeping rock wall, Whisperflow 1hp. waterfall pump. PCC2000 in-floor cleaning system, WetEdge Primera Stone "Tahoe Coast"

  6. Back To Top    #6

    Re: HELP!! Numbers way off

    Sam's club used to have 10# boxes....

    8000 gallon 20' x 48" round vinyl frame pool, 12" sand filter (don't have the specs on the pump), TF100 test kit
    Handy Links: PoolMath, TF-100 Test Kit, Pool School, CYA-Chlorine Chart
    "Shock" is a process, not a product!

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    ktdave's Avatar
    Join Date
    May 2007
    Location
    Katy, TX
    Posts
    888

    Re: HELP!! Numbers way off

    I suggest not bringing your Alkalinity to 100. Shoot for no higher than 70-90. With a new plaster pool, your pH is going to "creep-up" no matter what, because of the curing process. If your Alk is above 100, it will creep faster. Just my experience.
    11,000 gal. gunite w/midnight blue and white pearl PebbleTec
    Intelliflo 4x160 pump
    Intellichlor IC-20 SWG
    Pentair cartridge filter 420 sq. ft.
    Mastertemp 400K BTU heater
    Legend Platinum cleaner
    Pool School
    JasonLion's Pool Calculator
    TF Test Kits

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    Join Date
    Nov 2007
    Location
    Katy, Texas
    Posts
    25

    Re: HELP!! Numbers way off

    Great, Thanks...
    32x20 Freeform (17,500 gal.) Inground pool Depth: 3-4.5-8 ft. Pentair 400k BTU heater, 320 Chlorinator, 420 Cartirdge filter, Easytouch wireless controler. Whisperflo 2hp circ pump, One main drain. 12" raised spa w/6 jets. (spillover) 750 sq. ft. stamped concrete, 6 ton moss rock waterfall with weeping rock wall, Whisperflow 1hp. waterfall pump. PCC2000 in-floor cleaning system, WetEdge Primera Stone "Tahoe Coast"

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