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Thread: Another...slightly cloudy blue pool

  1. Back To Top    #1

    Join Date
    Apr 2015
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    Boston MA
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    Another...slightly cloudy blue pool

    Hi Folks,

    It has been a while since I've posted. We have been swimming quite a bit this summer in the new pool...my apologies.

    I have been testing regularly and results have been great. I have used Poolmath religiously and maintained as suggested. All good...until yesterday..

    The pool was used quite a bit at the weekend. I have only backwashed once this year...it's currently running at 15 psi.

    Here are my test results from yesterdays test.

    I will post in the forum now. Here are my results below....

    FC 4.5
    CC 0.5
    TC 4.5
    CH 75
    TA 110
    CYA 70
    PH 7.5
    CL/BR 2-4

    Salt 4600ppm...I know this is really elevated...I had just added water two hours before testing.

    I'm not sure what the problem is? High in Calcium?

    Here is a photo below....What steps do you suggest are next?

    Thanks so much for your help.

    Cloudy pool.jpg


    15x30 Oval 13,500 Gal, IG Vinyl built Fall 2015,
    TF-100 test kit
    Pentair Sand Dollar 40 Pump & Filter System 1HP Dynamo
    Pentair Intellichlor SWG, Dolphin Nautilus

  2. Back To Top    #2

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    PAGirl's Avatar
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    Re: Another...slightly cloudy blue pool

    Could your guest have had a lot f sunscreen or lotion on? I like to bump up my FC some before and after high swimmer load. If I were you, I raise my FC and do an OCLT.
    26' X 52" Intex Ultra Frame. Intex Sand Filter
    26' X 52 Intex Ultra Frame Install
    You can lead a horse to (clear) water, but you can't force him to swim in it!

  3. Back To Top    #3

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    Re: Another...slightly cloudy blue pool

    Great point about the Sunscreen. I had never considered that.

    In order to perform the OCLT test...do I need this kit? FAS-DPD test? If so, I do not have one...only the TF-1000


    15x30 Oval 13,500 Gal, IG Vinyl built Fall 2015,
    TF-100 test kit
    Pentair Sand Dollar 40 Pump & Filter System 1HP Dynamo
    Pentair Intellichlor SWG, Dolphin Nautilus

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    Re: Another...slightly cloudy blue pool

    If you have a TF-100, you have the FAS/DPD test included.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  5. Back To Top    #5

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    Re: Another...slightly cloudy blue pool

    Did the test. OCLT still the same over night. I performed a backwash, added new water and adjusted the chlorine levels.

    Pool looks great. I will do another full test tonight and post the results tomorrow.

    I appreciate your help Duraleigh and PAgirl.


    15x30 Oval 13,500 Gal, IG Vinyl built Fall 2015,
    TF-100 test kit
    Pentair Sand Dollar 40 Pump & Filter System 1HP Dynamo
    Pentair Intellichlor SWG, Dolphin Nautilus

  6. Back To Top    #6

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    Re: Another...slightly cloudy blue pool

    Quote Originally Posted by derryank View Post
    Did the test. OCLT still the same over night. I performed a backwash, added new water and adjusted the chlorine levels.

    Pool looks great. I will do another full test tonight and post the results tomorrow.

    I appreciate your help Duraleigh and PAgirl.
    No problem, that's what we're all here for!
    26' X 52" Intex Ultra Frame. Intex Sand Filter
    26' X 52 Intex Ultra Frame Install
    You can lead a horse to (clear) water, but you can't force him to swim in it!

  7. Back To Top    #7

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    Dec 2014
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    Santa Ana, CA
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    Re: Another...slightly cloudy blue pool

    Quote Originally Posted by derryank View Post
    Did the test. OCLT still the same over night. I performed a backwash, added new water and adjusted the chlorine levels.

    Pool looks great. I will do another full test tonight and post the results tomorrow.

    I appreciate your help Duraleigh and PAgirl.
    you turned off your SWG for OCLT and left pump running, did you? If SWG was 'on' the test is invalid- pool should have no chlorine source during the test and still lose less than 1ppm FC.
    44k plaster pool, Pentair 011018 pump, DE6020 filter, LED lights, K2006 test kit

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    Re: Another...slightly cloudy blue pool

    Quote Originally Posted by max2k View Post
    you turned off your SWG for OCLT and left pump running, did you? If SWG was 'on' the test is invalid- pool should have no chlorine source during the test and still lose less than 1ppm FC.
    OH? I did not...thanks for this information Max2k!!

    I will perform another test tonight....I love the help on this forum


    15x30 Oval 13,500 Gal, IG Vinyl built Fall 2015,
    TF-100 test kit
    Pentair Sand Dollar 40 Pump & Filter System 1HP Dynamo
    Pentair Intellichlor SWG, Dolphin Nautilus

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