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Thread: Sky high PH- really green pool

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    Sky high PH- really green pool

    I am in the process of cleaning a really green pool and shocking. For the heck of it I decided to test the PH and it is really high... too high to even read. Should I try to bring it down or not worry about it while I'm shocking? I know algae will bring it up and I know shocking will bring it up but Im just concerned about what it is doing to my equipment and if it is causing the chlorine to be less effective. On the other hand I have already spent $88 on chlorine and still need at least another 15 bottles at the minimum so I need to save money where ever I can so if its not vital I will skip it. That doesnt include the new pump motor I had to buy and the $700 heat exchanger I just ordered. Every penny counts at this point. Thoughts?
    Cleveland, Ohio
    IG 36,000 gallons. Vinyl Liner, Hayward ProGrid 3620 DE Filter, Hayward Super Pump, Hayward Gas Heater

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    JasonLion's Avatar
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    Re: Sky high PH- really green pool

    The PH test doesn't work correctly when the FC level is really high. Wait until the FC level is 10 or lower before testing/adjusting the PH.
    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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    Re: Sky high PH- really green pool

    Even though you use Chlorine neutralizer in the test it still isnt correct? I did use 2 drops of Chlorine neutralizer thinking that would take care of the high FC. If thats not the case then I wont worry about it then.
    Cleveland, Ohio
    IG 36,000 gallons. Vinyl Liner, Hayward ProGrid 3620 DE Filter, Hayward Super Pump, Hayward Gas Heater

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
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    37,879

    Re: Sky high PH- really green pool

    The chlorine neutralizer raises the PH significantly when the FC level starts high, so the results aren't valid.
    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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    Re: Sky high PH- really green pool

    Good to know. i wont worry about it till the pool is not green and the FC comes down to a normal level. thanks for the help!!
    Cleveland, Ohio
    IG 36,000 gallons. Vinyl Liner, Hayward ProGrid 3620 DE Filter, Hayward Super Pump, Hayward Gas Heater

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