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Thread: How long do I have to wait after adding CH and TA increasers

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    Join Date
    Jul 2012
    Location
    Bel Air, MD
    Posts
    52

    How long do I have to wait after adding CH and TA increasers

    Hello all,

    I am working with a 300 gallon hot tub with brand new water. I tested CH and found it to be 70ppm. I also tested TA and found it to be 70ppm. I have added enough CH increaser to bring the total to ~140ppm and have added enough Alkalinity increaser to bring it to 80ppm. How long should I wait until testing again?

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

    Re: How long do I have to wait after adding CH and TA increa

    If it's running, half an hour should be more than sufficient. Hot tubs and spas tend to mix the water quite vigorously.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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