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Thread: CH on the Rise

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    CH on the Rise

    So I did my full test tonight and got

    FC-6
    CC-0
    pH-7.2
    TA-80
    CH-450
    CYA-90


    My CH was 380 7 days ago..any idea on why it went up?? I added water yesterday but my tap water is only 150.
    14,000 gallon IG plaster pool, Cartridge Filter

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    JasonLion's Avatar
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    Re: CH on the Rise

    When water evaporates, all of the calcium is left behind. Then when you add more water to bring the pool back up to normal it brings along extra calcium, so the CH level goes up. Calcium is only lost when you backwash, splash out, overflow, or otherwise remove water from the pool.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Richard320's Avatar
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    Re: CH on the Rise

    What he said.

    On the other hand, it may not actually be that high....did you swirl it by hand or use a speedstir? My CH readings changed dramatically (for the better) when I let the speedstir really mix things up.
    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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    CH on the Rise

    I have the speedstir...should I drain more water and refill
    14,000 gallon IG plaster pool, Cartridge Filter

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    Richard320's Avatar
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    Re: CH on the Rise

    Quote Originally Posted by thabeezer
    I have the speedstir...should I drain more water and refill
    Your call.

    With careful attention to pH and TA, you can maintain CSI in the safe zone way up to about 800 CH. After that it gets very difficult - and I know this from personal experience. Your CYA is awful high, so it might not be a bad idea to drain off a few inches. Periodically I empty the spa into the pool and then use pool water to water the lawns while I refill the spa. Each time I do that, I exchange about 5%. It hasn't seemed to hurt the lawn any, but I do let FC run down to the low end of safe before hand. If you have a salt water pool, then I wouldn't use it on the lawn.
    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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