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Thread: Free Chlorine is WAY to low, what to do?

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    Free Chlorine is WAY to low, what to do?

    Hey guys!
    I was a little lax with my pool for a couple week and it started to green up on the bottom. I added some shock from Wally world and backed it up with bleach, lots of filtering , and some cleaning. It is starting to look a whole lot better now other than being a little cloudy.
    I took some tests and here is what I came up with.
    .8ppm FC
    .4ppm CC
    8ph units
    110ppm TA
    50ppm CH

    I know the FC is WAY to low, so what would you suggest? I have been using bleach for the most part, but don't know how much I should add to get it back to where it needs to be. Any suggestion?
    Also, if you have any suggestions on the rest of my tests, I'd appreciate that as well.

    4600g 15ft Round Above ground
    BBB method

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD
    Lower the PH a little, to the 7.2 to 7.6 range, and add lots more chlorine. With CYA of 60, shock level is 18. Bring the FC level up to 18 and hold it there by testing and adding more chlorine as needed at least twice a day and up to every hour.
    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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    Join Date
    Mar 2007
    Just for your information, to figure out how much bleach to add, click on the "POOL CALCULATOR" in JasonLion signature
    27' Round AG, 17,200 gallons, sand filter

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