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Thread: pH keeps rising and hazy water

  1. Back To Top    #1

    Join Date
    May 2015
    Location
    Chesapeake, VA
    Posts
    5

    pH keeps rising and hazy water

    Hi, I have a vinyl above ground pool and it was beautiful sparkly clear, but got a little hazy this week. We have had tons of rain. My numbers are...
    FC- 8.5
    cc-0.5
    pH-8.0
    TA-140
    cya- less than 30. The black dot disappears when the water level is at the very top of the cylinder.

    What do I need to do first? SLAM? fix pH? lower TA? I would appreciate
    15,000 gallon AG pool, 2005 ,
    Hayward Pro series sand filter S 180 T
    Hayward SP 1592 Power Flo Matrix 1 horsepower pump
    Well water, Chesapeake, VA

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: pH keeps rising and hazy water

    First, lower pH using Muriatic Acid. Then add another 15 ppm CYA, either by granular stabilizer or by using pucks or dichlor shock. Keep the FC up there around 8. And if things don't improve, go for the SLAM.

    What is your CH? Low CH is no problem for a vinyl pool, but high CH is bad for any pool, and high CH and high pH and high TA combined can cause cloudiness.

    Your high TA will come down if you are scrupulous about keeping pH down.
    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!

  3. Back To Top    #3

    Join Date
    May 2015
    Location
    Chesapeake, VA
    Posts
    5

    Re: pH keeps rising and hazy water

    Thanks for the response. I'm sorry, forgot that one. CH is 175.
    15,000 gallon AG pool, 2005 ,
    Hayward Pro series sand filter S 180 T
    Hayward SP 1592 Power Flo Matrix 1 horsepower pump
    Well water, Chesapeake, VA

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