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Thread: Should I increase my CYA level?

  1. Back To Top    #1

    Join Date
    May 2015
    Chesapeake, VA

    Should I increase my CYA level?

    Forgive me but I left my notebook with all of my readings at home...I believe ph was 7.4, calcium was 240ppm, FC was 5ppm, CC was 0ppm. I definitely know that CYA was approx. 45ppm.

    That said, we have a Pentair IC40 SWG and our pool is in the sun all day. No trees or anything to block the sun. It's already 80s every day here, summers are 90s every day. Does 45 seem too low?

    I plugged my numbers in to the Pool Calculator and it said that I would need about 135oz of stablizer for every 5ppm CYA that I would like to add.

    Recommendations? Go to 50? 60?
    20,000 gallon pool with liner
    Hayward DE6020 filter
    Pentair IC40 SWG

  2. Back To Top    #2

    TFP Guide
    Azgirl71's Avatar
    Join Date
    Apr 2015
    Sierra Vista, Az

    Re: Should I increase my CYA level?

    Yes, you have a SWG so I recommend a level of around 75 CYA
    Intex AG vinyl 15' x 48" 4,300 gallons due to skimmer install, Krystal Clear SF pump combo 2800 GPH, Krystal Clear SWG, Pool Blaster Max vacuum, Hayward thru the wall skimmer, TF 100 test kit with speed stir, K 1766 Taylor salt test, My SLAM Process

  3. Back To Top    #3
    Mod Squad
    Join Date
    Aug 2012
    DFW, TX

    Re: Should I increase my CYA level?

    Yes, need to increase it. Here is the Water Balance for SWCGs
    TFP Moderator
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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