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Thread: Opening swamp

  1. Back To Top    #1

    Join Date
    Jun 2013
    Tuscaloosa. AL

    Opening swamp

    We let our pool go this winter, and I have a swamp for the first time ever.

    FC 0
    CC 0
    pH 8.2+? A magenta color I have never seen before when testing
    TA 30
    CH 30
    CYA 0 completely clear with tube filled up

    I want to confirm that the order I should go is to get the pH to 7.5-7.8, then get CYA to 30-40, then start adding bleach to SLAM. When should I raise TA? And it is ok for CH to be so low, correct? I have a vinyl liner.

    Is there an amount of time I should wait between each step? Thanks in advance for your help!
    IG 18x36 23K Vinyl, Hayward DE 3620 Progrid, Hayward 1hp Superpump, 9/05, Polaris 380

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

    Re: Opening swamp

    Super high pH usually doesn't go with low TA. Did you allow the water to circulate and mix? You might have a layer of rainwater on top.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Opening swamp

    Get the PH figured out and lowered to around 7.2 to 7.4. Then raise TA to 70. Then start adding CYA. Then SLAM away.

    Wait half an hour after adjusting PH and then retest to be sure you go it right. Then you can do TA and CYA at the more or less the same time and start SLAMing directly afterwards. SLAM level is 10 for the first 24 hours, and then goes up to the SLAM level that corresponds to the CYA level you targeted.

    Low CH is just fine. Vinyl pools don't need CH.
    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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