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

Thread: CYA question

  1. Back To Top    #1

    Join Date
    Jun 2013
    Orlando, FL

    CYA question

    Good evening, I started a thread about a week ago here.
    This question is sort of a continuation of previous.

    So the pool math is very helpful for most chemical questions but help me or tell me if I am wrong in asking this......Is there a way to tell the equation that I am adding this much chlorine per day and it will spit out how much more stabilizer/cyanuric acid I need to add to be normal???? For my 4,000 gl. pool I am having to add about 3 cups(24oz.) of 10% bleach to keep levels at around 4, 2 cups before bed and then I have to add another cup in mid afternoon around 4pm. I know that is too much, but I don't want to add to much stabilizer. I know I can just guess and add about another 4-6oz. of cyanuric acid but I was just curious if there was a way to plug it into the the poolmath somehow and get an exact amount I should add so chlorine levels stay up all day? I hope this makes sense. Any input would be helpful. Thx.


  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: CYA question

    You need to get a CYA measurement done on your water to know how much CYA you need to add.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3
    BoDarville's Avatar
    Join Date
    Jun 2012
    DFW, Texas

    Re: CYA question

    Reiterating what Jason stated, Job One is to get a current CYA measurement to see where you stand.

    There are so many variables that go into determining the optimum CYA level for each pool that it doesn't lend itself to a straightforward plug-in formula that you can apply to any pool, anywhere. Location, time of year, climate, hours of sunlight on your pool, and variations from pool to pool are the main factors. Being in Orlando, you will likely have to run at a CYA level that is higher than most other pools in the country due to the intense sunlight prevalent at that latitude. It will take some experimenting on your part to determine the CYA sweet-spot for your pool.

    There is a field at the bottom of PoolMath called "Effects of adding chemicals" where you can determine the impact of a specific dosage of stabilizer or any other pool chemical for that matter. Simply input the number of ounces of stabilizer you plan to add and then select "stabilizer" from the drop-down list. The impact of the selected dose will appear immediately below the inputs. Be sure to enter the Size (pool water volume) of your pool at the top of PoolMath before you start.
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
    A good test kit is an investment, not an expense.

Posting Permissions

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