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Thread: Pool turned Green in a Few Hours

  1. Back To Top    #1

    Join Date
    Jul 2014
    round top, texas

    Pool turned Green in a Few Hours

    New member and this is my first post. I have a 35,000 gal salt water pool that up until a few hours ago was beautiful. Around 10:00 this morning I left home and when I I returned around 2:00 this afternoon, my pool was totally green. PH was good as I added a little acid this morning and also added a little chlorine as It was a bit low. The weather here today is very hot and humid. I just can't believe how fast this happened. I am shocking heavily right now.

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

    Re: Pool turned Green in a Few Hours

    Welcome to TFP!!!

    Likely it did not happen quickly. Likely the algae was grow for quite some time and finally became visible.

    What does "a bit low" for the chlorine mean? What is your CYA? That determines your required FC levels based on the FC/CYA Chart.

    Please post up a full set of test results and what test kit you are using.

    To clear the pool up, you should not nuke it with chlorine, you should follow the ShockLevelAndMAINTAIN Process and to do so requires one of the Recommended Test Kits.

    Please add your pool details to your signature and as described HERE as it will help us help you in the future.
    Jason, TFP Moderator
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  3. Back To Top    #3
    Smykowski's Avatar
    Join Date
    Sep 2011
    Gurnee, IL (North Suburban Chi-town)

    Re: Pool turned Green in a Few Hours

    Just so we're all on the same page, is it cloudy milky green, or clear emerald "green river soda" green?
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
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