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Thread: Follow up Water Test

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    Follow up Water Test

    I have been religiously testing my water since I opened my pool on Memorial Day. I added 2 gallons of liquid stabilizer right off the bat and have been keeping up with my chlorine levels using bleach. Water looks amazing. Four new cartridge filters also helped water clarity just a bit I would think! I get lots of comments from my friends that have pools and they are especially amazed since this is the first house I have had with a pool.

    As of last night:

    FC: 1.5 (added 128 ounces of bleach this morning)
    CC: 0
    pH: 7.5
    TA: 50
    CYA: 35

    Quick questions on my most recent test numbers.

    - Should I bother to mess with the TA?? My pH has been dead on 7.5 since I opened the pool and has not changed a bit. I'm afraid that if I add baking soda it may change my pH. If my pH has been stable to date - do I still need to adjust the TA?

    - CYA needs to come up to at least 50 correct?? I had a reading of basically zero when I opened the pool.

    Thanks!
    16 x 32 In-Ground vinyl, 21,000 Gallons, Hayward Cartridge Filter, Hayward Tiger Shark robotic cleaner, Taylor K-2006 Test Kit

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    Re: Follow up Water Test

    1. Don't let your FC get that low. Keep enough in there to stay between 4-6 ppm

    2. Increase your CYA to 50 ppm.

    3. Leave the TA alone as long as your pH remains stable.

    Nice work
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Follow up Water Test

    Thank you!
    16 x 32 In-Ground vinyl, 21,000 Gallons, Hayward Cartridge Filter, Hayward Tiger Shark robotic cleaner, Taylor K-2006 Test Kit

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    Butterfly's Avatar
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    Re: Follow up Water Test

    You get more out of the chlorine by adding it in the evening when the sun is off the pool. That way all works on any organics and none lost to the sun.

    As Dave said, don't let the FC fall below the min for the CYA level.

    You're lucky, we may know some folks that would kill for pH that remained stable

    Good job Now can we see a pic?
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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    Re: Follow up Water Test

    Quote Originally Posted by Butterfly
    You get more out of the chlorine by adding it in the evening when the sun is off the pool. That way all works on any organics and none lost to the sun.
    I only run my filter from 7 am to 4 pm. Is it still ok to put chlorine in the water at night given that the water won't be circulated for another 10 or so hours when the pump/filter starts up??
    16 x 32 In-Ground vinyl, 21,000 Gallons, Hayward Cartridge Filter, Hayward Tiger Shark robotic cleaner, Taylor K-2006 Test Kit

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    Re: Follow up Water Test

    No. Do not add any chemistry to the pool unless the pump is running.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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