Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: Cloudy pool cannot clear up.

  1. Back To Top    #1

    Cloudy pool cannot clear up.

    I opened up my pool around the first of may and I can't seem to get it clear. I have had 2 different algae break outs. I've shocked it and had to put in algaecide 2 different times to finally kill it. I have put 2 bottles of clarifier and it still does not clear. I'm testing daily and my last test yesterday is: Alk 100, PH 7.2, Free chlorine 4, Stabilizer is 115. I have been reading and realize that the stabilizer is too high. I have done a partial drain and it is still high. The water just remains cloudy. Sometimes it looks white and sometimes it looks aqua. The pool place said that the algaecide has had a chemical reaction with the well water causing the cloudiness. I think I need to increase the free chlorine to make it more effective until the stabilizer reduces. One more thing I changed the pool sand out this year before I started it up. I put the recommended sand and the recommended amount although one of the suction fingers got a crack in it and I lost about a bag of sand in the pool. I fixed the finger and replaced what I thought was enough. Can anyone please give me some guidence?
    My pool is an inground vinyl pool around 32000 gallons. I think the size is 16 x 32. The filter is a sand filter. The pool is around 20 years old. I have been operating it since 2006.

  2. Back To Top    #2
    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    Location
    SW Indiana
    Posts
    9,085

    Re: Cloudy pool cannot clear up.

    Welcome to TFP!

    We'll get you straightened out pretty quickly.

    I think you have the chemistry situation figured out, and your pool store doesn't. With your stabilizer at 115ppm, chlorine at 4ppm isn't good enough. Ditch the algaecide and clarifier. Maintain your pool at shock level according to the Chlorine CYA Chart and follow the guidance in Defeating Algae Consistency is important to getting things done quickly.

    Normally the sand level in the filter is just below where the tank starts narrowing at the top.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Cloudy pool cannot clear up.

    Welcome!

    You're on the right track. Reduce CYA by draining so that shock level is something reasonable, then take the chlorine level up to shock level and keep it there until all the algae is dead. What you've done so far is drive it back but not kill it all, which allows it to regroup and come back for a counterattack.

    A little inspiration:
    pretty-black-pool-t58442.html
    first-time-pool-owner-t61565.html
    a-little-encouragement-for-those-with-algae-and-new-to-bbb-t57137.html
    frog-filled-green-swamp-to-oasis-work-in-progress-t48213-20.html be sure to look at page 2
    before-and-after-t36785.html
    a-final-picture-set-of-how-well-the-bbb-method-works-t33199.html
    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!

  4. Back To Top    #4

    Re: Cloudy pool cannot clear up.

    I will try to follow the CYA to chlorine chart so the cloudiness will go away. From the info of the chart it looks like I need the chlorine level to be around 8 or 9. Is that safe to swim? How long will it take for the CYA to get to normal level?
    My pool is an inground vinyl pool around 32000 gallons. I think the size is 16 x 32. The filter is a sand filter. The pool is around 20 years old. I have been operating it since 2006.

  5. Back To Top    #5
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Cloudy pool cannot clear up.

    Quote Originally Posted by Ghoward1234
    I will try to follow the CYA to chlorine chart so the cloudiness will go away. From the info of the chart it looks like I need the chlorine level to be around 8 or 9. Is that safe to swim? How long will it take for the CYA to get to normal level?
    To clear the algae, you need shock level, not regular levels. 8 or 9 will only maintain the status quo.

    It is safe to swim all the way up to shock level for your CYA.

    CYA doesn't go away on its own. It gets lost by splashout, backwashing, or draining.

    These are all really basic questions that are covered in detail in Pool School.
    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!

Posting Permissions

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