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Thread: Restarting a Slam

  1. Back To Top    #1

    Join Date
    Jun 2015
    Location
    Grand Prairie, Texas
    Posts
    36

    Restarting a Slam

    Was out of town last week and with the storms of Texas I returned to a dark green pool again.... I measured my chemicals and here are the results

    Chlorine 0, CH 200, CA 0, TA 100 and pH 8.0.

    I have the acid to lower the pH but wanted to know if I need to raise my CYA from 0 before I start slamming. I looked at the Chlorine/CYA chart to figure out my shock level and the instructions read the lower the CYA the lower chlorine level needed bring to shock. The chart starts at CYA 20 shock level 10 but doesn't advise what to do if CYA is less than 20 or 0.

    Thanks
    21000gals/in ground/plaster/pentair pump

  2. Back To Top    #2

    Join Date
    Jun 2015
    Location
    Grand Prairie, Texas
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    36

    Re: Restarting a Slam

    CA above should be CYA 0...

    21000gals/in ground/plaster/pentair pump

  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
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    18,768

    Re: Restarting a Slam

    Zero CYA means shock level is 10 FC.

    You can go ahead and add some CYA to get to 30 or so and just assume it's all there and start targeting 12 FC.
    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!

  4. Back To Top    #4

    Join Date
    Jun 2015
    Location
    Grand Prairie, Texas
    Posts
    36

    Re: Restarting a Slam

    Thanks.. headed to strlory to get a stabilizer

    21000gals/in ground/plaster/pentair pump

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