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Thread: Freezing Temps - Clogged DE Filter

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    Join Date
    Jan 2015
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    Dallas TX
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    Freezing Temps - Clogged DE Filter

    The pressure in my pool continues to be high after backwashing the DE filter. This just started yesterday. I pulled out the filter grid assembly yesterday evening and tried to was it off somewhat, but i have not had a chance to soak them to clean thoroughly. The temperature outside is getting down below 20 tonight and will be quite cold for a few days.

    Does anyone know if i can remove the filter grid assembly and just let the water circulate in the pool to keep it from freezing?

    Thanks!

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    Re: Freezing Temps - Clogged DE Filter

    Welcome to TFP!

    Yes, you can remove one or more grids, leave them out and reassemble the filter. That will allow water to be circulated without being filtered. Note that if you don't also throughly clean the inside of the filter, you will probably get some DE in the pool. Of course DE in the pool is easy enough to fix when temps return to normal.

    The other option would be to do a quick winterization of the plumbing.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Jan 2015
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    Re: Freezing Temps - Clogged DE Filter

    Awesome! Thanks for the info!

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    Richard320's Avatar
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    Jan 2010
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    San Dimas, CA (LA County)
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    Re: Freezing Temps - Clogged DE Filter

    I'd guess your gauge froze and is reading wrong. After you backwashed, do you get good flow? Ignore the pressure - is there a normal amount of movement in the skimmer and from the returns? If so, order up a new gauge and just run the thing.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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