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Thread: How much should chlorine drop in day...

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    How much should chlorine drop in day...

    I converted from Baquacil last (best thing I ever did). My question is about free chlorine.

    PH=7.5
    TA=150
    Cya=80
    CH 110

    The number after the date is an early evening check, the next number is the amt of increase in chlorine I expect based on the amt of bleach added and then the post bleach estimated chlorine level. The only measured chlorine is once daily in the late afternoon.

    Date evening check added bleach (est) est post Chlorine
    5/21 4.0 +4 =8
    5/22 6.5 +0 =6.5
    5/23 4.5 +0 =4.5
    5/24 3.0 etc,et

    I have a trichlor feeder that is full of tablets but "off". I added the feeder after I decided to abandon Baquacil but before I knew enough about BBB. I plan to use if for vacations and wasn't thinking when I filled it.

    So here is my question, it has been cool and overcast but, being new to chlorine/cya I don't have a good sense of how fast chlorine should drop. I was wondering if maybe the feeder is leaking chlorine. So is this a "typical" drop for chlorine levels in 24 hours (about 2ppm?)?

    Thanks!
    Northeast PA.
    10,500 gallon AGP Vinyl.
    Sand filter.
    Installed 2007.

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    duraleigh's Avatar
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    Apr 2007
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    Sebring, Florida
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    Re: How much should chlorine drop in day...

    So is this a "typical" drop for chlorine levels in 24 hours (about 2ppm?)?
    Yes, almost exactly "average" you will go up a bit as it gets warmer.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    pwrstrk's Avatar
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    Aug 2012
    Location
    Elverson Pa.
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    4,758

    Re: How much should chlorine drop in day...

    2-3 ppm per day is normal. Sun and pool usage comes into play also.


    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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