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Thread: Always fighting algae

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    Always fighting algae

    I have noticed over the past two years that algae is a consistent issue. I have to brush a minimum of every three days and shock weekly to keep things in check. If I do this my water stays clear and I have minimal algae growth...can barely see it when brushing. Is this normal?? I do have a decorative 400 gallon pond right next to my pool...literally two feet away from my pool with a small stream and waterfall acting as my pond filter. Could this be a constant source of algae spores to the pool?? I'm thinking this is the case and I will just have to deal with this issue or get rid of the pond...

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    Join Date
    Aug 2010
    Dallas, TX

    Re: Always fighting algae

    As long as your pool is in balance, what's around it won't really matter. In regards to shocking, you should rarely, if ever, have to shock your pool.

    Can you post a full set of pool chemistry numbers?

    FC - Free Chlorine
    CC or TC - Combined Chlorine or Total Chlorine
    pH -
    TA - Total Alkalinity
    CH - Calcium Hardness
    CYA - Cyanuric Acid (stabilizer/conditioner)
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Always fighting algae

    Could this be a constant source of algae spores to the pool?? I'm thinking this is the case and I will just have to deal with this issue or get rid of the pond...
    Once you get (and keep) adequate chlorine levels in your pool, algae will be a thing of the past. It is unrelated to your pond.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Join Date
    Aug 2010
    Boston, MA

    Re: Always fighting algae

    It would be more accurate to say that if you follow the described approach, you don't see the algae growing. It's there, it's growing, you're just managing to keep it at a low enough level to not be obvious to the naked eye. It's still a problem. A single proper shock process should deal with it.
    20k gallon IGP
    Plaster over gunite
    3/4 hp Hayward pump
    Purex Triton DE filter
    TF100 test kit w/ speedstir

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    Re: Always fighting algae

    My numbers last test were pH 7.6, FC 2ppm, CC 0ppm, Alkalynity 80, CYA 60 my hardness was low but it's a vinyl lined pool.

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    pepsiholic's Avatar
    Join Date
    May 2009
    Fairmont, WV

    Re: Always fighting algae

    If you're cya is 60, then your chlorine is to low, that's why you are always fighting algae. Your chlorine needs to be at a minimum of about 5 and NEVER drop below that. Every time it drops below the minimum, algae starts to grow. You need to raise your chlorine level to 24 to shock it, and keep adding liquid chlorine to maintain the shock level of 24 until you pass the overnight test.
    24 x 52 Round AG Outback Empire Pool 13,500 gal.
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  7. Back To Top    #7
    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: Always fighting algae

    Welcome to TFP

    Pool School pool-school/ is your new best friend!

    Yes, you should shock your pool, but it is not a one time event, it is a process.

    Use the PoolCalculator.Com to figure doses for you.

    Lots of folks around here willing and able to help you.

    Post back in this thread with questions.
    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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