Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 2 of 2

Thread: How to deal with chlorine levels that do not come down

  1. Back To Top    #1

    Join Date
    Jun 2015
    gainesville, FL

    How to deal with chlorine levels that do not come down

    Hello -- and thank you in advance for your help.

    Here is the story -- Had some black algae. Dealt with that successfully. Then left town for 3 weeks. Friend added acid while we were away. Returned home to a beautiful looking pool, however tests show the following results....

    pH 7.5
    FC 22
    CH 300
    TA 100
    CYA 50

    I left the salt water generator at 50% while we were away, thinking the chlorine would come down.

    What should I do now?

    My first guess is to turn off chlorine generator until levels come way down. I know I need to increase CYA levels. Does having a pool screen reduce the amount of chlorine that gets burned off? Anything else I should be adjusting or thinking about?

    Thank you
    Marcite/Gunite Pool 13594 Gallons.
    Pentair Sta-Rite Cartridge Filter

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: How to deal with chlorine levels that do not come down

    Yes, shut off the SWG. And yes, if things are screened you will lose less to sunlight. If there's a roof over that pool, you'll lose hardly anything to UV, so you won't need as much CYA and you certainly don't need the SWG on as long as you've been running it.
    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