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

Thread: Pool Store Testing Results

  1. Back To Top    #1

    Pool Store Testing Results

    I took my pool water to 2 different pool stores yesterday for testing. Store A uses Taylor test kit, Store B uses strips with an electronic strip reader

    A couple of notes.
    1. I added 32oz of 8.25% bleach (1ppm) and 16oz 31% MA (0.1pH) between my tests and the pool store tests.
    2. Store A does not use FAS-DPD for FC and CC, it is a color comparator using the Taylor kit and tube. The max level for Store A FC test is 5.
    3. Store B. Total Chlorine is pretty close. However, there is no way FC is only 4.1 with CC being 3.4.
    4. Store A TA test. The technician counted until the color switched to pink, however, it was not finished changing. I asked her to redo the test and count until the color stopped changing, then subtract one. This 2nd test resulted in TA=120. However, their test software convers this based on a "stabilizer correction" and reported 90ppm. What is this "stabilizer correction"?
    5. Store B pH test is way off, I don't know what else to say about that.
    6. My big concern...CYA. I measured 65 using my Taylor K2006 kit. Store A uses a larger tube (probably 50ml pool, 50ml reagent) with an up/down slider to test for CYA. She did this twice and concluded 100ppm. I expected about 65. Consequently, I'm concerned with the level of CYA in my pool.

    On the CYA test. Please give me some more advice on how to properly read the test. I did my test outdoors, back to the sun and fill until I can't see the dot. Towards the end of the test, it is hard to know exactly when it disappears as it goes away gradually.
    19,500gal, Gunite, Pebbletec, Chlorine, PCC2000 cleaner, Stenner Chlorine Pump, MegaCatch Mosquito Trap

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Pool Store Testing Results

    Sounds like you are doing the CYA test correctly. Ignore the pool store test results (especially the one that used a test strip) and trust your own.

    Posted from my Droid with Tapatalk ... sorry if my response is short
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  3. Back To Top    #3
    Isaac-1's Avatar
    Join Date
    May 2010
    SW Louisiana

    Re: Pool Store Testing Results

    I agree incorrect lighting conditions is probably what threw off the CYA test for the pool store, why they try to run a test that requires reading while standing with the sun to your back outdoors inside a store is beyond me.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from
    ~Remember TFP counts on your donations to keep this site ad free~

Posting Permissions

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