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Thread: chlorine levels

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    chubbiegull's Avatar
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    chlorine levels

    As mentioned earlier, we have had the wettest two month period in Charleston history. I tested the water yesterday and the chlorine test did not come close to matching the pinkish color on the guage. all the colors were distincly darker. Does that mean too much or not enough chlorine
    Pete Horton

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    Re: chlorine levels

    What kind of test are you using? I don't even own an OTO chlorine test so can't help.

    We have certainly been deluged and I am once again going to pump out my pool this weekend unless we get more before then.
    5900 G Fiberglass IG pool (circa 1990), SWG Hayward Aqua Rite GoldLine (2013), IntelliFlo Variable Speed Pump (2013), Hayward Pro Sand Filter (circa 1990), Well water (no iron or other metals fortunately), test with Taylor K2006C, Charleston, SC

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    chubbiegull's Avatar
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    Re: chlorine levels

    the taylor little blue box
    Pete Horton

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    Texas Splash's Avatar
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    Re: chlorine levels

    I suspect you are very low on chlorine if the OTO comparator view is very light in color. In addition, we really have no idea what your FC level should be since we don't know your current CYA. Remember, those two items go hand-in-hand together. Please post a full set of test results with your TF-100 or Taylor K-2006 and we'll be happy to check your numbers against the recommended levels for each area. Have a nice day.
    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
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    Re: chlorine levels

    You really should be testing for chlorine every day..... especially with the amount of rain we have been getting.... and still are getting.....

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    Re: chlorine levels

    Quote Originally Posted by Texas Splash View Post
    I suspect you are very low on chlorine if the OTO comparator view is very light in color. In addition, we really have no idea what your FC level should be since we don't know your current CYA. Remember, those two items go hand-in-hand together. Please post a full set of test results with your TF-100 or Taylor K-2006 and we'll be happy to check your numbers against the recommended levels for each area. Have a nice day.
    so if it is dark the chlorine is too high?
    Pete Horton

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    Re: chlorine levels

    Again, without a complete set of numbers, there is no way to assist.

    Please list in this format:

    FC
    CC
    PH
    TA
    CH
    CYA

    FC ppm without the CYA ppm is somewhat meaningless.
    5900 G Fiberglass IG pool (circa 1990), SWG Hayward Aqua Rite GoldLine (2013), IntelliFlo Variable Speed Pump (2013), Hayward Pro Sand Filter (circa 1990), Well water (no iron or other metals fortunately), test with Taylor K2006C, Charleston, SC

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    Re: chlorine levels

    I tested the water yesterday and the chlorine test did not come close to matching the pinkish color on the guage.
    I am guessing at some of the things you are saying but there is no pink in an OTO chlorine test. Please look at the box and tell us what Taylor test you are talking about.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    chubbiegull's Avatar
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    Re: chlorine levels

    the tf-100 kit

    it has a t-1000 fc and ph test kit in it

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    Re: chlorine levels

    Quote Originally Posted by chubbiegull View Post
    As mentioned earlier, we have had the wettest two month period in Charleston history. I tested the water yesterday and the chlorine test did not come close to matching the pinkish color on the guage. all the colors were distincly darker. Does that mean too much or not enough chlorine
    OK, apparently you have the OTO kit. You are really losing us when you say chlorine and pinkish color in the same sentence. Look at this video and it may help.

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    Re: chlorine levels

    i think i had a duh moment - looked at it backwards???

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    Re: chlorine levels

    Ok i'm back with more info.

    the water is somewhat cloudy.

    this is the chlorine and ph test from the Tf-100


    Attachment 44028


    It is nowhere near yellow - does that mean too much chlorine or too little

    I need some help where to start.

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    Re: chlorine levels

    To the best of my ability.... I am a newbie at this. This is what I wrote down from yesterday's tests

    cl - ??? who knows based on the pic above.
    ph - 6.8
    fc -65 drops *.05 = 3.25
    cc - dependent on number 1?
    ch - 18*25
    ta - 6*10
    cya 80-100

    i jotted down the calculations, i dont have the instructions here with me now so i cant infer the final amounts. maybe someone can help me out.


    In a nutshell i think i may have a screwed up mess?

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    Mod Squad JVTrain's Avatar
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    Re: chlorine levels

    Your FC results (if you used a 10 mL water sample) would be 65 drops * 0.5 to give 32.5 ppm. CC is not dependent on the FC, other than you have to add the drops to get the solution clear to get the FC, then add 5 drops of R-0003. At this point the solution will either remain clear (0 ppm CC) or will turn pink. Again, you add drops of R-0871 if it turns pink and use 0.5 ppm per drop to determine CC. Please review this thread with detailed instructions, as well as the instructions card provided with the kit: Extended Test Kit Directions

    Your pH is a little concerning. Usually at high FC levels, the pH test reads higher than actual but the pH test itself is not valid when performed on water that has an FC of 10 or above.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    chubbiegull's Avatar
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    Re: chlorine levels

    So too much chlorine or nor enough?
    where do I start?

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    Re: chlorine levels

    Quote Originally Posted by chubbiegull View Post
    So too much chlorine or nor enough?
    where do I start?
    How does your water look? Is it clear? You will also need to perform the CC test when you do the FC test. If your water is clear and you have a cc at .5 or less, then yes, your FC level is too high. Follow the CYA/Chlorine Chart. The target FC level will depend on you CYA level and your method of chlorination.
    18x36, 21,000 gallon, in-ground, vinyl, Pentair SWG, DE filter, Pentair 250K Heater, Taylor K-2006, Dolphin Triton

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    Mod Squad JVTrain's Avatar
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    Re: chlorine levels

    Pete: Now that you have a great test kit, the only way to put it to good use is to arm yourself with the knowledge of how to maintain your pool and solve problems as they arise. I'm not sure how much time you've spent in Pool School but everything you need to know is in there. Start with the Getting Started section of Pool School, specifically: ABCs of Pool Water Chemistry. Work your way into the Handy Reference section. Post your test results again, including the CC level. How does the water look? Cloudy? Murky? Can you spot heads or tails on a quarter at the bottom of the pool or tell if your main drain's screw heads are phillips or straight head just by looking from the pool deck? Is there debris on the bottom? When brushing, do you get clouds of fine material coming up from the bottom?

    If your pool is crystal clear, then your FC is too high. If you're attempting to SLAM (see link in my signature) the pool because of an algae outbreak, cloudy pool or elevated CC level then your FC is about where it needs to be, depending on whether your CYA is 80 or 100. The CYA is not the easiest test to master but it can be repeated by dumping the sample mixture back into the mixing bottle, then dropping back into the measuring tube multiple times until you get a consistent result.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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