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Thread: Help! Pool out of whack!

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    Join Date
    Jun 2016
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    Carmel, IN
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    Help! Pool out of whack!

    When I closed pool for 2 days a week ago, chlorine level was 5 and all other chemistries good. Opened the pool 2 days later and YUCK! Couldn't see the bottom. I went through the usual pool store advice . Monday - added 4 gallons of Vertex CSS-12 Sodium Hypochorite 12.5%. Tuesday - Added 1/2 gal. muratic acid, 8 gals of CSS-12, and clarifier. TC 2.8, FC 1.6, ph 7.6, TA 225, CH 300, Stab 24, TDS2374, Phos 500. Wed - Added Algecide 60, 8 gal of CSS-12 and 5 lbs oxyBrite powder. TC 5.2, FC .9, PH 7.5, TA 158, CH 300, Stab 53, TDS 2418, Phos 800. Thurs - added 5 lbs PH Plus and then 8 gal of CSS-12.
    TC 3.2, FC 1.1, ph 6.4, TA 158, CH 300, Stab 51, TDS 2060, Phos 200.
    Today - Friday - Remembered TFP - Why oh why did I stray???

    Using TF-100 test kit: FC .5, CC 1.5, Alk 130, Cal 600 plus, CYA less than 20. I still cannot see the bottom of the pool!

    Please advise. Thank you!
    24K gal, IG vinyl, 1 HP WhisperFlo pump, 300 sqft cartridge filter, TF-100 test kit

  2. Back To Top    #2
    Texas Splash's Avatar
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    Re: Help! Pool out of whack!

    Hello Jane ad welcome to TFP! Now that you have a TF-100, we can get you rolling. So your water is yucky (green/cloudy) and you need to "SLAM" (link below) and as follows:
    - CYA is very important. Too low and you lose FC to the sun. So make sure to test CYA outside under bright sunlight at your back. If it' still below 20, increase in 10 ppm increments until you reach 30. A CYA of 30 is your magic number for now.
    - Your pH is way too low and very corrosive. Increase tight away with Borax (or soda ash) to at least 7.0, but preferably 7.2 (orange).
    - AFTER you have adjusted the pH up to about 7.2, then increase FC to "12" using regular liquid bleach only (generic bleach is fine). Make sure it's plain, no scented products or splashless features.

    Once you have CYA being increased to 30, pH adjust up to 7.2-ish, and FC at 12, you are officially SLAMming. Follow the instructions on the SLAM page for more details. Good luck!

    To increase CYA via granular stabilizer, place the required amount as calculated by the Poolmath calculator into a white sock and place in the poolside skimmer basket. For those concerned about suction flow to the pump, suspending the sock near a return jet or from a floating device will also suffice. Best never to allow undissolved granules to rest directly against the pool surface. Squeeze the sock periodically to help it dissipate. Once dissolved, consider your CYA adjusted to that programmed (target) level. CYA test readings should show a rise in 24-48 hours, however some pools may experience a longer delay to fully register. Best to confirm final CYA in about 5-7 days before adding any more stabilizer/conditioner.
    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
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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  3. Back To Top    #3

    Join Date
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    Carmel, IN
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    Re: Help! Pool out of whack!

    Quote Originally Posted by Texas Splash View Post
    Hello Jane ad welcome to TFP! Now that you have a TF-100, we can get you rolling. So your water is yucky (green/cloudy) and you need to "SLAM" (link below) and as follows:
    - CYA is very important. Too low and you lose FC to the sun. So make sure to test CYA outside under bright sunlight at your back. If it' still below 20, increase in 10 ppm increments until you reach 30. A CYA of 30 is your magic number for now.
    - Your pH is way too low and very corrosive. Increase tight away with Borax (or soda ash) to at least 7.0, but preferably 7.2 (orange).
    - AFTER you have adjusted the pH up to about 7.2, then increase FC to "12" using regular liquid bleach only (generic bleach is fine). Make sure it's plain, no scented products or splashless features.

    Once you have CYA being increased to 30, pH adjust up to 7.2-ish, and FC at 12, you are officially SLAMming. Follow the instructions on the SLAM page for more details. Good luck!
    Thank you! Should I add the soda ash at the same time of getting the CYA up? Or after? Looks like I'm making some progress with the CYA. Jane C
    24K gal, IG vinyl, 1 HP WhisperFlo pump, 300 sqft cartridge filter, TF-100 test kit

  4. Back To Top    #4
    Texas Splash's Avatar
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    Re: Help! Pool out of whack!

    You can add Borax/soda ash at any time. The fact you have the stabilizer in there too won't hurt anything. The main two chemicals we never add at the exact same time are bleach and muriatic acid. They do not play nice together.
    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
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  5. Back To Top    #5

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    Re: Help! Pool out of whack!

    Quote Originally Posted by Texas Splash View Post
    You can add Borax/soda ash at any time. The fact you have the stabilizer in there too won't hurt anything. The main two chemicals we never add at the exact same time are bleach and muriatic acid. They do not play nice together.

    Thanks so much!
    24K gal, IG vinyl, 1 HP WhisperFlo pump, 300 sqft cartridge filter, TF-100 test kit

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    Richard320's Avatar
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    Re: Help! Pool out of whack!

    Quote Originally Posted by Jane C View Post
    When I closed pool for 2 days a week ago, chlorine level was 5 and all other chemistries good. Opened the pool 2 days later and YUCK! Couldn't see the bottom. I went through the usual pool store advice . Monday - added 4 gallons of Vertex CSS-12 Sodium Hypochorite 12.5%. Tuesday - Added 1/2 gal. muratic acid, 8 gals of CSS-12, and clarifier. TC 2.8, FC 1.6, ph 7.6, TA 225, CH 300, Stab 24, TDS2374, Phos 500. Wed - Added Algecide 60, 8 gal of CSS-12 and 5 lbs oxyBrite powder. TC 5.2, FC .9, PH 7.5, TA 158, CH 300, Stab 53, TDS 2418, Phos 800. Thurs - added 5 lbs PH Plus and then 8 gal of CSS-12.
    TC 3.2, FC 1.1, ph 6.4, TA 158, CH 300, Stab 51, TDS 2060, Phos 200.
    Today - Friday - Remembered TFP - Why oh why did I stray???

    Using TF-100 test kit: FC .5, CC 1.5, Alk 130, Cal 600 plus, CYA less than 20. I still cannot see the bottom of the pool!

    Please advise. Thank you!
    Wow. How much did you spend on all that?

    Just so you know.... that oxybrite powder contain MPS, which will give falsely high CC readings.

    If you have any of the clarifier, the algaecide, or the oxybrite left... set them aside for the next hazmat collection day. You don't need them. You don;t need the phos-free they likely sold you, either. You also don't need the pool store tests. That "free" testing cost you plenty. In the same week you've added both acid and pH plus, which tend to cancel each other out.

    I would be curious how adding 5 lbs of pH plus would leave TA unaffected and lower pH from 7.5 to 6.4

    Trust your own test results. And do not neglect to test pH yourself. It's in the little blue box inside your TF100. You don't have to use the OTO test, just the pH side. But check that yourself before you add any borax or soda ash (also known as pH plus)
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  7. Back To Top    #7

    Join Date
    Jun 2016
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    Carmel, IN
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    Re: Help! Pool out of whack!

    Thanks, all! Well, my pool is now clear . But, I still have not passed the overnight test. I'm still dropping more than 1 at night (and through most days).
    Suggestions?
    Thank you all!
    Jane
    24K gal, IG vinyl, 1 HP WhisperFlo pump, 300 sqft cartridge filter, TF-100 test kit

  8. Back To Top    #8

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    Mr Bruce's Avatar
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    Re: Help! Pool out of whack!

    Are all niche lights, ladders etc out of the pool? Anything hiding behind a weir door or in a skimmer?
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

  9. Back To Top    #9
    Mod Squad zea3's Avatar
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    Re: Help! Pool out of whack!

    Keep the chlorine up, and be sure to clean behind lights and ladders.
    TFP Moderator
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    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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  10. Back To Top    #10

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    Re: Help! Pool out of whack!

    Thank you! Yes, have done all that but will do it again. I'm going to change the filters again too. Thanks!
    24K gal, IG vinyl, 1 HP WhisperFlo pump, 300 sqft cartridge filter, TF-100 test kit

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