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Thread: What is it?

  1. Back To Top    #1

    Join Date
    May 2014
    Location
    Clinton,Iowa
    Posts
    42

    Angry What is it?

    I shocked my pool Friday night FC reading on Saturday were 10.8 and came home today after being on vacation to what I belive is algea but not sure. It is kind of clearish and yellow. Here are my readings:
    FC=2.8
    CC=.4
    TA=70
    CH=30
    CYA=80
    PH=7
    Pool Temp=78

    How can I be losing so much chlorine in 2 days when the stabalizer is so high? My filter probably needs to be replaced but at $100 a shot and the season almost over I think I am going to hold off. Next year we are getting a sand filter. My pic won't download.
    28' Above Ground Pool, 20,000 Gallons
    Sand Filter"
    Model #AC16985
    Pool built in July 2012
    Clinton, Iowa

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: What is it?

    With a CYA of 80ppm, you should never let the FC get below 6ppm. Once it does, then algae can start to grow. Clearly your FC is much too low. Review the FC/CYA Chart.

    Only 2 things consume FC. The sun and stuff in the water. With a high CYA, the sun is less a factor, so there must be something in the water.

    At this point you likely need to follow the ShockLevelAndMAINTAIN Process to clear up the pool.

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    Jason, TFP Moderator
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  3. Back To Top    #3

    Join Date
    May 2014
    Location
    Clinton,Iowa
    Posts
    42

    Re: What is it?

    Can you still swim while SLAMing?
    28' Above Ground Pool, 20,000 Gallons
    Sand Filter"
    Model #AC16985
    Pool built in July 2012
    Clinton, Iowa

  4. Back To Top    #4
    jccams's Avatar
    Join Date
    May 2010
    Location
    Dexter, MI
    Posts
    95

    Re: What is it?

    Yes as long as chlorine levels are at or below shock level that corresponds to your CYA.
    24,000 gal vinyl Lazy L, 1 hp pump, DE Filter, Pentair 250K heater, Letro Legend pressure side pool sweep

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