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Thread: Help for noob! Clear green water after adding baking soda

  1. Back To Top    #1

    Join Date
    Aug 2014
    Arlington , tennessee

    Help for noob! Clear green water after adding baking soda

    Ordered and now waiting on my test kit. In the meantime, I have a clear green pool. Suspect metals present, as it changed to green after TA raised with baking soda. We added it slowly, over 24 hours. We had been using chlorine tabs, as pool build just finished and was time to close. Was told to shock - todays numbers:
    CC- 0
    pH- 7.17
    Hardness- 150
    Alkalinity w/stabilizer correction- 111
    CYA- 96
    Copper-0 (this surprised me)
    Total dissolved solids- 400

    It's covered with a safety cover. Water temp has been at 70 degrees or lower for weeks now. Help!

    28000 gal vinyl unground. SWG (not turned on yet). Sand filter

  2. Back To Top    #2
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Houston, Texas

    Re: Help for noob! Clear green water after adding baking soda

    Hi, welcome to TFP! Did you use well water to fill the pool? If so you may have iron in the water, which will cause the water to look green next to a blue liner. I'm glad to see you have a test kit on order, as those results are a little suspect. CYA can't be measured that precisely with any confidence in the result. The CYA test is very subjective and it is hard to believe it is that high already in a new build. How long has the pool been open?
    TFP Moderator
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    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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  3. Back To Top    #3
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Columbia, SC

    Re: Help for noob! Clear green water after adding baking soda

    I agree with zea, unless the PB added too much CYA at the start up 96 is very suspect.

    If it's closed, has the pump been removed? Are you circulating water?
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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