Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: Help! Cloudy blue pool will not clear up!!

  1. Back To Top    #1

    Join Date
    May 2014

    Help! Cloudy blue pool will not clear up!!

    My pool has been cloudy for 3 weeks. Ever since I opened it. I have a 5 year old AG 30 ft (20,0000 gal) pool with a 1.5 hp Hayward pump. I have a 250 lb 18 in. Sand filter. I have been using the BBB method for 2 years. This year I cannot get the cloudiness to go away. I have been trying to keep the chlorine level at 15 ppm for the last 4 days to kill algae. I have also completely changed the sand in my filter yesterday. Here are my numbers, thy have been running pretty consistent for the past week or 2.

    As of this morning:

    FC 10 (just added 7 ppm this morning to boost)
    CC 0.5
    TA 150
    Ph 7.4
    Calc hardness 70
    CYA 55

  2. Back To Top    #2
    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: Help! Cloudy blue pool will not clear up!!

    You should follow the SLAM level in Pool School to a T !

    What test kit are you using?

    Changing the sand was more than likely unnecessary

    FC SLAM level for CYA of 55 is about 22 .

    Welcome to the forum
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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

    Re: Help! Cloudy blue pool will not clear up!!


    SLAM it at 22 FC like Butterfly says. Adding some DE or cellulose to your sand filter as mentioned at the bottom of the SLAM article might also clear things up sooner.
    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