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Thread: Reagent testing questions

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    Reagent testing questions

    While I wait for my TF-100 kit to arrive I have a few questions.

    1) Is it OK to get a cup or glass of water from the pool to bring it in to run the battery of tests (if I want to run all the tests?)
    2) I assume it is ok to use the same testing vial for each test as long as it is rinsed well between tests?
    13,000 gallons w/ spa (in-ground) | Plaster pool surface
    2.5HP Jandy Stealth Pump | CL580 Filter | Polaris 480 Pro w/ Halcyon Pump | 400,000 BTU Jandy LT | Jandy Aquapure 3PPM | Jandy PS4

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    JasonLion's Avatar
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    Re: Reagent testing questions

    1) As long as you do the PH and chlorine tests first.
    2) Yes. However, it is generally a good idea to use a different vial for the FAS-DPD chlorine test from the vial you use for all of the other tests. The FAS-DPD test slowly builds up a milky residue that can make some of the other tests harder to read.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Reagent testing questions

    Quote Originally Posted by JasonLion View Post
    1) As long as you do the PH and chlorine tests first.
    2) Yes. However, it is generally a good idea to use a different vial for the FAS-DPD chlorine test from the vial you use for all of the other tests. The FAS-DPD test slowly builds up a milky residue that can make some of the other tests harder to read.
    Does the TF-100 kit (that comes with a FAS-DPD test) include a separate vial for any of the tests? Maybe specifically the FAS-DPD?
    13,000 gallons w/ spa (in-ground) | Plaster pool surface
    2.5HP Jandy Stealth Pump | CL580 Filter | Polaris 480 Pro w/ Halcyon Pump | 400,000 BTU Jandy LT | Jandy Aquapure 3PPM | Jandy PS4

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    JasonLion's Avatar
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    Re: Reagent testing questions

    The TF100 comes with two test vials, one of which is marked for FAS-DPD only.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Reagent testing questions

    Quote Originally Posted by JasonLion View Post
    The TF100 comes with two test vials, one of which is marked for FAS-DPD only.
    Excellent! I should be set between the TF-100 w/ K-1766, Magnetic Stirrer and the sample sizer then!

    Why do PH and FC have to be tested first in my situation? Is it merely to try and test at the pool temperature?
    13,000 gallons w/ spa (in-ground) | Plaster pool surface
    2.5HP Jandy Stealth Pump | CL580 Filter | Polaris 480 Pro w/ Halcyon Pump | 400,000 BTU Jandy LT | Jandy Aquapure 3PPM | Jandy PS4

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    JasonLion's Avatar
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    Re: Reagent testing questions

    PH and FC will change over time once the water is taken out of the pool. You want to test both in the first few minutes after taking the sample, first minute if practical. The changes happen for several reasons, including temperature changes.
    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

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    Re: Reagent testing questions

    Couple more questions:

    1) Can I test all the parameters but FC at any time of the day? Or should they all be done in the evening?

    2) The K-1766 kit came with some sort of cloths or pads. What are they for?
    13,000 gallons w/ spa (in-ground) | Plaster pool surface
    2.5HP Jandy Stealth Pump | CL580 Filter | Polaris 480 Pro w/ Halcyon Pump | 400,000 BTU Jandy LT | Jandy Aquapure 3PPM | Jandy PS4

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    aussieta's Avatar
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    Re: Reagent testing questions

    personally i dont allow glass near the pool in case of breakage
    but a plastic cup would be safe
    depending on when you have your SWG running
    you can perform the tests anytime
    but you dont want your minimum FC to go low before your SWG run time
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    Re: Reagent testing questions

    Quote Originally Posted by aussieta View Post
    personally i dont allow glass near the pool in case of breakage
    but a plastic cup would be safe
    depending on when you have your SWG running
    you can perform the tests anytime
    but you dont want your minimum FC to go low before your SWG run time
    Well I didn't literally mean glass. I meant cup or something to transport water to a more convenient location.

    Right now I am having FC level issues (previously due to low salt) and am working on trying to get everything aligned. Right now trying to deal with high pH, even after adding 22oz of MA (per poolmath) I'm still testing above 8.2...

    As far as SWG run time, it's set to run 30% of the time (what it was set when we bought the house). I don't know if SWG's run at the top of the hour or from the start of the daily program or what? So I gather at some point it runs 30% of an hour every hour the pump is on?
    13,000 gallons w/ spa (in-ground) | Plaster pool surface
    2.5HP Jandy Stealth Pump | CL580 Filter | Polaris 480 Pro w/ Halcyon Pump | 400,000 BTU Jandy LT | Jandy Aquapure 3PPM | Jandy PS4

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    aussieta's Avatar
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    Re: Reagent testing questions

    the SWG will run at 30% power whenever your pump is running
    most pools have the filter on a timer
    so you want to check your FC just before timer kicks in
    SWG inground peanut shaped eco-bright concrete pool
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    Lincoln Salt Chlorinator, 25 gram cell Sand Filter with glass media
    Taylor K2006-C test kit, Taylor K-1766 salt test, Dolphin M500 pool cleaner
    are you taking care of your pool or is the poolshop taking care of you

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    Re: Reagent testing questions

    CYA should be tested in bright, indirect sunlight.

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    boston62's Avatar
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    Re: Reagent testing questions

    I read its like 15 on 15 off when set for 30%, on the Auto Pilot.
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    Re: Reagent testing questions

    Quote Originally Posted by aussieta View Post
    the SWG will run at 30% power whenever your pump is running
    most pools have the filter on a timer
    so you want to check your FC just before timer kicks in
    My system is programmed via my jandy automation. I think the pool pumps and filtration kicks on at 9am or so. I thought best time to test FC was in the evening?
    13,000 gallons w/ spa (in-ground) | Plaster pool surface
    2.5HP Jandy Stealth Pump | CL580 Filter | Polaris 480 Pro w/ Halcyon Pump | 400,000 BTU Jandy LT | Jandy Aquapure 3PPM | Jandy PS4

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    Re: Reagent testing questions

    Quote Originally Posted by aussieta View Post
    the SWG will run at 30% power whenever your pump is running
    most pools have the filter on a timer
    so you want to check your FC just before timer kicks in
    This is not true for most SWG systems. A setting of 30% means it only is generating for 30% of the time. And when generating it is always at the same power level.
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