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Thread: High pH Issue

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    High pH Issue

    Well I am servicing my own inground pool (~30,000 gal) for the first time this year. Following the TFP method and got the pool up and running, SLAMed it and the water beautiful. TA at ~110, FC 7, CYA 60 ...

    except..

    My pH is literally off the charts >8.2

    We had the pool refurbished (piping, deck, pebblesheen, etc) last year and it was only open about 30 days before the winter close. Had the pool company close it. Fast forward to this year, I assume the new plaster spiked my pH and when I did the initial test I guess the pool was not well mixed with the added water. I did the pH test a lot earlier than the other standard tests, won't do that again.
    SLAM worked well regardless.

    But my pH is staying above the 8.2 indicator. Already added 2 gal of ~25% acid, and half a gal of 34.6%. Literally no impact on pH.

    Is my path here to keep adding acid 1/3 gal of 34.6% at a time (44 oz moves 8.2 to 7.5) until i see an impact and can calculate the required amount? Just checking my approach with those more knowledgeable. Any other causes that could be driving it up I should check for?

    Thanks

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    frustratedpoolmom's Avatar
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    May 2007
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    Re: High pH Issue

    You have the right approach.

    It was probably much higher than 8.2 as that's as high as the indicator shows.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Richard320's Avatar
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    Re: High pH Issue

    Quote Originally Posted by Bal View Post
    Well I am servicing my own inground pool (~30,000 gal) for the first time this year. Following the TFP method and got the pool up and running, SLAMed it and the water beautiful. TA at ~110, FC 7, CYA 60 ...

    except..

    My pH is literally off the charts >8.2

    We had the pool refurbished (piping, deck, pebblesheen, etc) last year and it was only open about 30 days before the winter close. Had the pool company close it. Fast forward to this year, I assume the new plaster spiked my pH and when I did the initial test I guess the pool was not well mixed with the added water. I did the pH test a lot earlier than the other standard tests, won't do that again.
    SLAM worked well regardless.

    But my pH is staying above the 8.2 indicator. Already added 2 gal of ~25% acid, and half a gal of 34.6%. Literally no impact on pH.

    Is my path here to keep adding acid 1/3 gal of 34.6% at a time (44 oz moves 8.2 to 7.5) until i see an impact and can calculate the required amount? Just checking my approach with those more knowledgeable. Any other causes that could be driving it up I should check for?

    Thanks
    Hold on a second... what's the FC level? If it's still above 10, then your pH reading is going to be whacked.
    Check out the pictures. Accurate pH test during shock levels with R-007?
    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!

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    TFP Guide

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    Re: High pH Issue

    If your FC is truly 7ppm would say yes keep adding till you get it in range. My pool is almost 1/3 the size of yours, filled in late Oct and I am still going through approx 7oz a day of 31%. You could be driving it up if you have something causing aeration such as a water fall or SWG but the why is somewhat irrelevant you still want it in range.
    12,300 Gallon, IG PebbleFina, 3 ft sheer, 2 Jandy nicheless LED lights, Jandy Pro 1.5HP VS pump (A.O. Smith Motor), PB4-60 Booster pump, Polaris 280, Jandy cv340 cartridge filter, Zodiac Z4 control panel W/iAquaLink, Stenner pumps for chlorine & MA connected to WiOn WiFi switches, TF-100. You can support TFP with AmazonSmile just click the link!

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    Re: High pH Issue

    That TA of 110 is going to allow pH swings. As you add acid, TA will come down.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    frustratedpoolmom's Avatar
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    Re: High pH Issue

    TA of 110 isn't bad unless you have an SWG.

    FC is only 7.

    PH was probably off the chart from the refinish last year and being winterized..... patience, keep the course of adding the acid as you are doing.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Re: High pH Issue

    Thanks for the feedback. I will continue on the path I am on...

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