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Thread: Chlorine test color orange not yellow?

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    Chlorine test color orange not yellow?


    Ran the test twice. This means there is too much chlorine in the pool?

    The free chlorine test, I think I had nearly 45 drops so 22ppm chlorine and zero chloramite.

    Cya at 40.

    The calcium hardness test did not turn red, only pink and then when adding drops it only turned to clear not blue. So low on calcium? Can I add a calcium increaser with chlorine levels too high?

    TA test only 90. How to increase to desired level?


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    Join Date
    May 2015
    Central Illinois

    Re: Chlorine test color orange not yellow?

    Please add your pool information to your signature at the bottom so we can see more information. For example the type of pool you have will determine if you need to adjust your CH. We need more information.
    Viking Maui 2300g fiberglass in ground pool in a screened room with polycarbonate roof. 45gpm pump with sand filter manually chlorinated. Entire pool water can cycle in 51 minutes. Jacuzzi 336g hot tub with ozonator, manually chlorinated. TF 100 test kit with speed stir. Fungi pronounced Fun Guy, I'm Jim

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    Divin Dave's Avatar
    Join Date
    Oct 2013
    Longview, Texas

    Re: Chlorine test color orange not yellow?

    The chlorine OTO test turned orange because the FC is so high.
    With CYA of 40, your target FC target should be 5 and minimum of 3.

    Also, with FC above 10, then the accuracy of the pH test is suspect. pH will test higher than what it really is with FC above 10.

    Yes, add calcium increaser to raise CH. Its ok with high FC.

    Dont do anything to the TA, it will most likely take care of itself over a bit of time. Once your FC is reasonable, then retest pH...then keep and eye on your pH over the next few weeks and if you have to adjust it often, then at that time, you might want to adjust the TA. TA only effects the rate of pH change.
    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 !!

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    Mod Squad
    Join Date
    Aug 2012
    DFW, TX

    Re: Chlorine test color orange not yellow?

    Richard320 has some kind of scale for that test that involves tweety bird yellow and school bus yellow, looks like he needs to add orange julius to his scale. That is definitely some high chlorine.
    TFP Moderator
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    BoDarville's Avatar
    Join Date
    Jun 2012
    DFW, Texas

    Re: Chlorine test color orange not yellow?

    The Extended Test Kit Directions contains verbiage that can help you approximate the FC level when using the OTO test. Note that it is considerably more subjective than the FAS-DPD chlorine test.
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
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    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Chlorine test color orange not yellow?

    You don't even need to run that OTO test since you have the FAS-DPD test that reads much more accurately.

    I wouldn't treat the pool based on any of those test results until FC drops down to 10 or less. It can bleach out or react to the other reagents and give you false readings.

    The big question is WHY is the FC so high? Are you trying to treat Mustard Algae or something? Did your chlorinator go wild and dump a bunch? Did someone else dump a bunch in? Are you blindly adding stuff?

    Also, you've been a member for nearly three years.... isn't it time you filled out your signature?
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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