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Thread: Double checking recommended chlorine amount

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    Join Date
    Jul 2016
    Location
    Valparaiso, IN
    Posts
    27

    Double checking recommended chlorine amount

    Pool is crystal clear and gets 100% sun ALL day. Was 91 degrees today with a heat index of about 99-100.

    TF test numbers of:
    FC 2 (CC 0-.5) Target of 6
    PH 7.7-7.8
    TA 210-220
    CYA 45

    Pool math recommended 70oz of 12.5%. One adult swimmer today and two clean children

    Does 70oz sound high to anyone else?.....yesterday it was roughly 52 oz.
    Pretty confident I do not have anything growing in the pool.....just wondering if a 70oz daily addition in this oppressive heat and full sun is considered normal?
    Aqua Leader 27' (54") 17,100 gallon, Hayward SW 256T sand filter, Hayward 2 hp 2-speed pump, water testing with a TF-100.

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    jeffchap's Avatar
    Join Date
    Jun 2012
    Location
    Edmond OK
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    1,373

    Re: Double checking recommended chlorine amount

    A 4 ppm loss in full sun is not unreasonable at all.
    25000 gallon free-form gunite
    Jandy Stealth pump/CL340 cartridge filter
    Pentair IC40 SWG
    Pentair MasterTemp 250HD heater
    Jandy AquaLink RS automation

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    AimeeH's Avatar
    Join Date
    Apr 2012
    Location
    Columbia SC
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    Re: Double checking recommended chlorine amount

    Pool math calculates recommendations based on your current number and your target number. Your chlorine is low at 2 with CYA of 45.
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

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    Join Date
    Jul 2016
    Location
    Valparaiso, IN
    Posts
    27

    Re: Double checking recommended chlorine amount

    Quote Originally Posted by AimeeH View Post
    Pool math calculates recommendations based on your current number and your target number. Your chlorine is low at 2 with CYA of 45.

    Just for clarification, that chlorine test result was at 7:30pm. I had added "today's" chlorine, last night at 7:30.
    So, 4 ppm loss throughout today's sunny day.
    Aqua Leader 27' (54") 17,100 gallon, Hayward SW 256T sand filter, Hayward 2 hp 2-speed pump, water testing with a TF-100.

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