Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: Help with cloudy, green water

  1. Back To Top    #1

    Help with cloudy, green water

    I have about a 12,000 gallon pool in Southern California and over the past few weeks since its been extremely hot and humid I developed a bit of a green algae problem.

    On the advice of the local Leslie's, after scrubbing all the algae off with a brush I added a couple bags of shock and a liquid algae treatment the name of which I can't remember. This seems to have helped with the visible algae not sticking to the sides and the bottom anymore but this was three days ago and each day since I wake up to find my water a little greener and a little cloudier. This morning the water was so cloudy I couldn't see the bottom in the shallow end.

    I dont know if I should add additional chlorine since I shocked the heck out of it just a few days ago so can anyone advise me on what I need to do to get the water cleared back up again?

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,345

    Re: Help with cloudy, green water

    Welcome to TFP.

    Start by reading the ABC's of pool chemistry in pool school and ordering a good test kit.

    You should definitely add additional chlorine, but how much all depends on what your CYA (stabilizer) level is.

    If you'll read and learn the methods taught here, you'll soon understand what happens and what to do about it to keep your pool well maintained.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3

    Re: Help with cloudy, green water

    Thank you for the reply. I took some water in to Leslie's for testing yesterday and here is what the summary showed. Leslie's recomendation is for me to drain the pool, but I talked to a pool tech who said he doesn't think that is necessary. HE pointed out that in So Cal where I live, evaporation probably causes me to have to fill the pool often and he's right, I put about 2-3 inches of water in per week so I think I have pletny of fresh water. His recommendation was a thorough filter cleaning and a heavy shock treatment and said only consider draining the pool if all else fails. Would you agree with that assessment?
    Free Chlorine - 0
    Total Available Chlorine - 0
    Calcium Hardness - 650
    Cyanuric Acid - 110
    Total Dissolved Solids - 4000

  4. Back To Top    #4
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,345

    Re: Help with cloudy, green water

    Unfortunately draining some water is in your future. You have both CYA and CH at levels that make it hard to maintain. Also the pool stores are notoriously bad at the CYA test and the test only goes to 100, so your CYA is probably much higher than that.

    I recommend that you get a good test kit. www.poolsupplyworld.com is close to you and sells the TF-100 which is the best kit you can get.
    Once you get the kit and have a good set of test results, you can start getting this thing under control.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  5. Back To Top    #5
    Smykowski's Avatar
    Join Date
    Sep 2011
    Location
    Gurnee, IL (North Suburban Chi-town)
    Posts
    3,065

    Re: Help with cloudy, green water

    Your CYA and CH are high, and when water evaporates, they are left behind. When you add water, if your fill has CH in it, you will be driving it even higher. The only way to remove CYA and CH from the pool is to partially drain the pool.
    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
    The most important article on this site - The ABCs of Pool Water Chemistry

  6. Back To Top    #6
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Help with cloudy, green water

    Welcome to TFP!!!

    Just to add, being in So Cal, you may have access to a 2nd option to remove the CH and CYA which is Reverse Osmosis treatment. But, it is not cheap, like $400+, so usually drain and fill is a better option.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •