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Thread: Big differences between test kits. Confused

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    Join Date
    Jul 2015
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    Zeeland MI
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    Unhappy Big differences between test kits. Confused

    Before I joined this forum I ordered a drip test kit from Amazon Poolmaster 22270. It seems to have really good reviews and the results are pretty easy to read. However, I have 3 different dip kits and results from tests at Pools Plus that all seem to disagree with each other when testing PH and FC. Can anyone explain why I am seeing such a big difference?

    Poolmaster Kit Dip Strips Pools Plus

    PH 7.2 around 7.2 7.6
    FC 2 ppm around 5 ppm 6 ppm


    Other Levels

    ALK 120
    CYA around 30 (dip test)

    Which ones should I trust and why the big difference?
    15'x30' 54" deep Above Ground (Built July 2015)
    12,000 Gallons
    Ecco 22" Sand Filter
    Waterway 1.5HP pump model: SD-15-1N11CC
    Taylor k-2006 test kit

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    San Rafael, CA USA
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    12,082

    Re: Big differences between test kits. Confused

    Trust none of the above. This is why we only recommend either the TFTestkits TF-100 or the Taylor K-2006 test kits. See Test Kits Compared. The FAS-DPD chlorine test is by far more reliable, accurate, and consistent even than DPD tests and test strips, but the test you are looking at in the 22270 is an OTO chlorine test and that can be hard to read/interpret unless you are used to it. Furthermore, the pH test in the TF-100 and K-2006 use special chlorine neutralizers that will not affect the pH so the pH will be accurate up to at least 10 ppm FC.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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    Texas Splash's Avatar
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    Re: Big differences between test kits. Confused

    Chem Geek speaks the truth. I have the TF-100 and absolutely love it and the accuracy I receive. I also have the speed stir for easy mixing and it's perfect. One of those products that makes you wonder how you ever managed to go so long without it before. Seriously consider it if possible at TFTestkits.net.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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    Zeeland MI
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    Re: Big differences between test kits. Confused

    Ok. I got a new kit on order.
    I just shocked the pool for the heck of it with a pack of cal hypo that came with the pool. Dip strips showed a difference but the pool master drip kit show absolutely no change. Still showing 2 ppm. I Wonder why the kit got such good reviews.

  5. Back To Top    #5

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    Re: Big differences between test kits. Confused

    Because no one knows any better. They don't do tests like you are doing and don't have any absolute good reference to compare to. Also, it's possible that you got a bum kit worse than others for some reason. Maybe it was exposed to too much light or heat in storage or shipping.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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    Jul 2015
    Location
    Zeeland MI
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    Re: Big differences between test kits. Confused

    Got my Taylor K-2006 kit today. I am pretty amazed at how easy it is to decipher the results.

    FC: 3.6 CC: 0 PH: 7.4 TA: 130 CH: 150 CYA: 35

    Not bad so far huh? Maybe bump up my PH to 7.6 and FC to about 4? In any case it amazes me how far off the PH reading was from the pool store. 7.4 was AFTER 1 box of Borax. When they tested it was probably at about 7.2 and they said 7.6.
    15'x30' 54" deep Above Ground (Built July 2015)
    12,000 Gallons
    Ecco 22" Sand Filter
    Waterway 1.5HP pump model: SD-15-1N11CC
    Taylor k-2006 test kit

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    Join Date
    Jan 2014
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    Buckeye AZ
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    807

    Re: Big differences between test kits. Confused

    Just play in the pool and the pH will come up. It's pretty much perfect.
    10,500 gal IG, Topaz Pebble, auto-level
    Hayward DE filter, 2HP Ecostar VSP, ProLogic PS-4, GVA actuators
    Cal Pools Wave Force Plus (wall return jets plus 2 floor pop-ups), Venturi Skimmer
    Water sheer, 2 wok pots, bubbler stem on the baja step
    ColorLogic Mutlicolor LED lamp. Taylor 2006+speed stir

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