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Thread: Arizona pool, summer, and free chlorine usage.

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    Join Date
    Jul 2015
    Location
    AZ
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    19

    Arizona pool, summer, and free chlorine usage.

    My pool right now is crystal clear but I've noticed that it's going through free chlorine much faster than normal. It's a lot hotter now. Above 100 everyday and the pool feels very warm. Here were a lot of palm flowers in the pool the other day so I considered that there may have been algae building up so I started slamming it for the entire day. Got my FC Levels above 24 and ran the pump constantly, but I had to work so I wasn't able to add chlorine while I was at work the next day.

    As soon as I got home I tested and my FC Level was 12. That seems like a dramatic drop right? It did rain all last night too. Can that effect FC Levels? Pool is in constant sun as well. Here are the other numbers:

    FC 12
    Acid 7.8
    CYA 60
    CC 0

    Should I keep slamming? Is this just normal for a hot Arizona summer?
    16000 Gallons, Plaster, Sand Filter, Hayward Superpump II.

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    Mod Squad pooldv's Avatar
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    Aug 2012
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    Re: Arizona pool, summer, and free chlorine usage.

    No, rain would only affect PH through aeration.

    I would keep it at SLAM and do an Overnight Chlorine Loss Test tonight to see how that goes.
    TFP Moderator
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    Join Date
    Jul 2015
    Location
    AZ
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    Re: Arizona pool, summer, and free chlorine usage.

    So it looked like my pool was holding an FC Level of 27 before I went to bed last night. I woke up this morning, tested, and I was at 20. I guess there's still an infection? I'm worried though because tomorrow I leave for a week long trip and I don't have anyone that can tend to the pool.

    I'm going to add 6 gallons of chlorine tonight and hope I don't have a green pool when I get back. Do you guys think that's a futile effort?

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    duraleigh's Avatar
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    Apr 2007
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    Sebring, Florida
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    30,082

    Re: Arizona pool, summer, and free chlorine usage.

    Do you guys think that's a futile effort?
    Hard to say. If you have unseen algae, you will probably drop below 10 ppm in 24-48 hours and could drop to zero before you get back.

    Far better would be to have someone put in one small jug of Clorox for the last 4 days you are gone....Wednesday, Thursday, Friday, Saturday
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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