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Thread: A few questions

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    A few questions

    There are a few minor clarifications I'd like to ask from the experts. My numbers this morning were as follows:

    FC: 2.5
    CC: 0
    TA: 80
    CH: 270
    CYA: 25

    I have three questions:

    1) I know my CYA is low. My SWG has no problem maintaining FC at this level though. I generally run it at 30-35% and maintain a FC range of 2.5-4.0. I think the VSP helps here. Is there any other motivation to increase the CYA?
    2) When I measured the TA, after the change of color, I had some particles in the solution. I've never noticed this before, but did the test a second time and the same thing happened. Does this tell me anything? For example, it's possible that one of my chemicals is older and I'd like to make sure that it's not unreliable. Also, just curious.
    3) I accidentally did my chlorine test in the container that is not labelled "Chlorine Only" (i.e. the one I use for all my other tests). Does having this happen one time cause any issue? Is there anything I should do to clean it out properly?


    27,000 gallon, 3M Quartz, SWG, Hayward EcoStar SP3400VSPVR (2HP variable speed pump), Pentair Quad DE filter[/color]

  2. Back To Top    #2

    Join Date
    May 2014
    Current: Singapore Previous: Clayton, Victoria, Australia

    Re: A few questions

    1) To reduce wear on your SWG.
    Someone else will answer the other questions.

  3. Back To Top    #3

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    Kiss4aFrog's Avatar
    Join Date
    May 2013
    Hudson, WI

    Re: A few questions

    +1 what he said about the wear.

    What kit do you have and how old are the chemicals ??

    To clean out the container you used for the chlorine test you might use mild soapy water but just rinsing it with tap water if it's plastic should be enough.
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. May 20 - opened for summer
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
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  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: A few questions

    1) There are many small advantages to increasing CYA. The largest is that your SWG will last more than twice as long. Your chemistry will also be much more stable and much less prone to getting into problems.
    2) Not important. Various things can precipitate out. That is rare, but not at all unheard of.
    3) No problem. Over time the FAS-DPD chlorine test will cause the tube to get cloudy. Keeping a separate tube for that avoids problems reading the other tests through the clouded tube. One use won't make enough difference to notice, only many many uses.
    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

  5. Back To Top    #5

    Join Date
    Oct 2013
    Chapin, SC

    Re: A few questions

    And that it says chlorine only is really only a way to charge you an extra 50 cents for the label. Oh, and it's not graduated to do a pH test (44 ml) as long as you rinse it after each test, it really doesn't make any difference. When my tube gets a little cloudy stained, I just get a piece of paper towel and wipe it clean--clean as new!
    Pool size: 24000gal inground Vinyl-Taylor k-2006 and k-1766 test kits and-speed stir
    Intermatic P1353ME digital timer w/freeze sensor
    CircuPool Si-45 SWCG System
    Polaris 280 vacuum/Polaris PB4-60 boost pump
    Pentair IntelliFlo VS 3hp Pump--Pentair sand filter

  6. Back To Top    #6

    Join Date
    May 2013
    Bay City, Michigan

    Re: A few questions

    so your SWG is running at 30 to 35% and your maintaining enough FC for your CYA levels....but how long are you running your pump? Also things may change when the weather gets hot and really sunny, and your water gets warming, your current program may no longer be able to keep up.
    12500 gallons, 24 foot round above ground
    Hayward Sand filter, Pentair OptiFlo 1HP 2-Speed pump

  7. Back To Top    #7
    Divin Dave's Avatar
    Join Date
    Oct 2013
    Longview, Texas

    Re: A few questions

    what the others said
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge. Experience- it's what's learned just after you needed it most !!

  8. Back To Top    #8

    Re: A few questions

    Thanks for all of the feedback. The wear on the SWG makes sense, so I'll start adding some CYA. My VSP runs all the time at a lower speed, except a couple hours a day at high speed, so I think that's what let's me run the SWG at a manageable level. Less wear seems better, though.

    Good inputs on the other two, as well. I won't sweat either one.

    Happy swimming to all.....
    27,000 gallon, 3M Quartz, SWG, Hayward EcoStar SP3400VSPVR (2HP variable speed pump), Pentair Quad DE filter[/color]

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