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Thread: Lower alkalinity when you have a splashing spillway for the spa.

  1. Back To Top    #1

    Join Date
    Jul 2014
    Location
    San Jose, CA
    Posts
    2

    Lower alkalinity when you have a splashing spillway for the spa.

    I have alkalinity in the 150 range, which I am trying to lower using information from this forum.
    My ph has always seemed to rise to the 7.8 range, I add acid and in a week or 2 it is back up there.
    I have a built in spa that is higher than the pool with a spillway that 'splashes' into the pool when the filter is running, (about 8 hours a day).

    Am I always going to have the high ph problem because this spillway acts as an aerator?

    It is a remodeled pool about 3 years old, built in with a pebbletec finish. 21,000 gal. Cartridge Flilter CCP-420

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Lower alkalinity when you have a splashing spillway for the spa.

    Welcome to TFP!

    The spillway will certainly provide some aeration. If TA is at all high you sill see some PH drift due to the combination of high TA and aeration. Lowering TA will either eliminate the PH drift or greatly reduce it.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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