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Thread: Heater causing cloudy water in raised spa?

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    Join Date
    Apr 2007
    Location
    Plano, TX
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    110

    Heater causing cloudy water in raised spa?

    For some reason when I heat up our raised, attached spa, the water becomes cloudy. It remains clear if I run it without the heater. Does this make any sense? If I look carefully, it looks like tiny white particles floating around, which I assume is DE??
    I picture the inside of a heater simply as a waterway that has water running through it whether its on or not, and the burners just apply heat to those pipes? I could see if it only happened once or twice, and maybe had some DE in there from a previous torn filter grid, but it does it every time! Any input would be appreciated.
    28K IG, stonescapes pebble, raised spa, hayward heater, Pentair Intelliflo, Pentair 60ft DE filter, built around 1980, remodeled 2007.

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    Mod Squad Bama Rambler's Avatar
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    Jun 2009
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    SouthWest Alabama
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    Re: Heater causing cloudy water in raised spa?

    It could be calcium clouding when the water gets warm.
    Can you post a set of test results?
    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
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3

    Join Date
    Apr 2007
    Location
    Plano, TX
    Posts
    110

    Re: Heater causing cloudy water in raised spa?

    I will try to get that done. I heated it this morning, it clouded up, but after running for about 20 minutes cleared up considerably. You can still see little particles in it, but much much better after letting it run?
    28K IG, stonescapes pebble, raised spa, hayward heater, Pentair Intelliflo, Pentair 60ft DE filter, built around 1980, remodeled 2007.

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