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Thread: Taking Action in Jersey

  1. Back To Top    #1
    catrispoli2's Avatar
    Join Date
    Jun 2013
    Freehold NJ

    Taking Action in Jersey

    33,000 gal IG vinyl
    Cartridge Pentair
    Installed in 2005
    T100 kit readings
    Auto chlorination tablets

    Ready to move to liquid chlorine
    FC 25
    CC 0
    TA 80
    CYA 100
    Borate 15
    Water clear sparkling and CYA was 70 last year

    Been reading your threads for 2 summer seasons and need to take the plunge to the liquid chlorine method. Plan: Empty auto chlorination tabs from feeder. Start by using 1 gallon 12% liquid chlorine in front of return feeder when on. Slowly adding the gallon over 2 minutes in deep end. Test daily, use 1 gallon daily adjusting to keep,FC between 12 -15. Does this sound ok?

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Taking Action in Jersey

    Welcome to TFP!!!

    Not quite so fast ...

    Your first step should be to replace at least 50% of the water to get the CYA back in the recommended range. You also missed the pH test.

    Please add your location (City, State or City, Country) to your profile and pool details to your signature as described HERE as it will help us help you in the future.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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  3. Back To Top    #3
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Franklin, NC

    Re: Taking Action in Jersey

    CYA was 70 last year and 100 now??

    100 is the limit of the CYA test, so you have to do a diluted test. While the full instructions are in the Pool School, here is the short version. Mix 50% pool water with 50% tap water. Use this mixed sample as your test water. If still at a 100 you will need to dilute more. Here is a great chart by JamesW to explain dilution rates and what you multiply the results by to get an approximation of your CYA level.

    Pool water......Tap or distilled water.........Multiply result by


    Oh, heck - Instead of Jason's link here is what we need to help more

    • The size of your pool in gallons
    • If your pool is an AG (above ground) or IG (in ground)
    • If it's IG, tell us if it's vinyl, plaster/pebble, or fiberglass
    • The type of filter you have (sand, DE, cartridge) and, if you know, the brand and model of the filter.
    • If you know, please tell us the brand and model of the pump, and mention if is it a two speed or variable speed pump.
    • Date of pool build/install, particularly important if less then a year old.
    • What kind/model of water test kit you are using
    • Other significant accessories or options, such as a spa , SWG, or cleaner

      I' glad you got the bug to take control of your pool and that is what this site is all about, but let's do it right.
    TFP Moderator

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  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Taking Action in Jersey

    There isn't much point in doing the CYA test with dilutions higher than 1 to 1. You lose so much precision that the results are essentially meaningless.
    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

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