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Thread: PoolMath checkup

  1. Back To Top    #1

    Join Date
    May 2014
    Location
    Dallas, Tx
    Posts
    72

    PoolMath checkup

    Hi there. Switched my pool over to BBB at the end of May and thanks to all of the good advice and support, the water is beautiful and have added nothing but bleach and MA as needed. What has changed is the CSI message which is telling me "potential to become corrosive to plaster" or perhaps I just havent noticed before.

    The numbers this morning are:

    FC - 6
    CC - 0
    PH - 7.4
    TA - 50
    CH - 450
    CYA - 60

    I added bleach to bring the FC up close to 9.

    Any reason for concern? If so, what steps should I take? Normally I would add 121 oz of bleach.
    Mike

    Pool is inground 20' x 40' 42000 gallon, rectangular plaster about 60 years old, replastered 2 years ago. Pentair VS Intelliflo pump, Pentair 420 Clean & Clear Plus Cartridge filter. Using K-2006 test kit.

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

    Re: PoolMath checkup

    As long as you follow our recommended levels, there is no reason to pay any attention to CSI.

    As it happens, both your TA and PH are just slightly low. I would raise TA to around 70 and let PH go up on it's own (perhaps slowly).
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Join Date
    May 2014
    Location
    Dallas, Tx
    Posts
    72

    Re: PoolMath checkup

    Thanks for your help.
    Mike

    Pool is inground 20' x 40' 42000 gallon, rectangular plaster about 60 years old, replastered 2 years ago. Pentair VS Intelliflo pump, Pentair 420 Clean & Clear Plus Cartridge filter. Using K-2006 test kit.

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