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Thread: Odd FC

  1. Back To Top    #1
    tcat's Avatar
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    May 2012
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    Odd FC

    My auto chlorinator slowed down on me, so I started to get some algae on fittings. I slammed and all is well. One "odd" thing I noticed while holding FC at 18, is when my sample turned clear, it would keep turning pink after a few seconds. Add a drop, and is clear for a few, then oozes to pink again. Normally once it turns clear it stays there. Could it be the powder keeps dissolving in cold water? Pool is at 45 degrees, but I would think sample would warm up fairly quickly. Anyway, waiting for FC to get back down to 5 (it's still at 16 after 2 days)... cold water and clouds makes for real slow chlorine degradation!
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  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
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    Re: Odd FC

    It's normal for the sample to turn back pink if you let it sit several seconds. Don't worry about it.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Patrick_B's Avatar
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    Re: Odd FC

    +1 on Bama's response. Perfectly normal.
    TFP Moderator
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