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

Thread: So do I add CYA...

  1. Back To Top    #1
    awarsoca's Avatar
    Join Date
    May 2009
    Location
    Columbia, SC
    Posts
    64

    So do I add CYA...

    PH 7.8
    TA 80
    CYA 40
    TC 7.5

    The TC has dropped from 14+ in the last week but clearly the CYA is below recommended levels for a SWG vinyl
    Clint
    Pics of the build process
    34x16x25 Lagoon IG Vinyl 14,800gal (Oxford Tile/Glimmerglass 20mil)
    Pentair: Intelliflo VS3050 pump, Intellichlor IC40 SWG, Clean and Clear 320 cartridge filter, LA01N 3/4hp booster pump and Polaris 280 cleaner

  2. Back To Top    #2
    reebok's Avatar
    Join Date
    Apr 2009
    Location
    Lakeland, FL
    Posts
    1,268

    Re: So do I add CYA...

    Yes it is. I think you answered your own question.
    Also, tc is kind of a vague number. FC and cc would be much more descriptive.
    16x32 21,000 gallon in-ground exposed aggregate, 1.5hp pump, 120 sqft catridge filter, birdcage, solar panels, aquavac tigershark qc robot.

  3. Back To Top    #3
    awarsoca's Avatar
    Join Date
    May 2009
    Location
    Columbia, SC
    Posts
    64

    Re: So do I add CYA...

    Sorry typo...it was a FC number not TC. (BTW those are last night numbers...CC was 0 two days ago)
    The reason I am hesitant to add the CYA is that the FC number is higher than it should be for a SWG Vinyl. I didn't want to add the CYA and hold the FC at the high level unless I needed to
    Clint
    Pics of the build process
    34x16x25 Lagoon IG Vinyl 14,800gal (Oxford Tile/Glimmerglass 20mil)
    Pentair: Intelliflo VS3050 pump, Intellichlor IC40 SWG, Clean and Clear 320 cartridge filter, LA01N 3/4hp booster pump and Polaris 280 cleaner

  4. Back To Top    #4
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: So do I add CYA...

    It doesn't work that way, the FC will still drop if you aren't adding chlorine.

    You should raise the CYA to 70, leave the SWG off until the FC drops where you want it, and then turn it on adjusting the percentage till you find the right setting, to maintain your FC at the recommended range.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  5. Back To Top    #5
    awarsoca's Avatar
    Join Date
    May 2009
    Location
    Columbia, SC
    Posts
    64

    Re: So do I add CYA...

    Thanks!
    Clint
    Pics of the build process
    34x16x25 Lagoon IG Vinyl 14,800gal (Oxford Tile/Glimmerglass 20mil)
    Pentair: Intelliflo VS3050 pump, Intellichlor IC40 SWG, Clean and Clear 320 cartridge filter, LA01N 3/4hp booster pump and Polaris 280 cleaner

Posting Permissions

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