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Thread: Pressure Problems

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    Pressure Problems

    Couple of weeks ago I had the pool company come and clean my DE Filter. It was full of DE, which explained why the pressure was building. They gave it a thorough cleaning. But lately the pressure has been building again. In addition I've been having algae issues, so I backwashed yesterday after cleaning the pool. All the green algae was released via the backwash, and then I added the recommended 6lbs of DE. Pressure was back to normal again, but within 2hrs or so it was back up to pre-backwash levels. Any ideas of what may be causing this? Thanks!
    18ft/40ft, 29,600 Gallons, Vinyl Liner, Hayward Perflex Extended Cycle DE Filter, Hayward Super Pump (HP1), Hayward CL220 Chlorinator

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    Mod Squad zea3's Avatar
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    Re: Pressure Problems

    Your filter is doing exactly what it is supposed to do, catch the debris from the algae. Algae will clog a filter quickly and DE filters especially. Are you completing the SLAM process to clear the algae? You will probably need to backwash and recharge frequently until the pool is clear.
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    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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    Re: Pressure Problems

    I should add I have a very mild form of Algae (at least I think it's Algae) - it's a greenish dust the lines the floor and sides of pool. Is there a way to attach a video here?
    18ft/40ft, 29,600 Gallons, Vinyl Liner, Hayward Perflex Extended Cycle DE Filter, Hayward Super Pump (HP1), Hayward CL220 Chlorinator

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    Mod Squad zea3's Avatar
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    Re: Pressure Problems

    You can use a photo hosting site like photobucket and post a link to your video here.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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    Re: Pressure Problems

    Quote Originally Posted by zea3 View Post
    You can use a photo hosting site like photobucket and post a link to your video here.


    IMG_1034_zpsm0zvbjxb.mp4 Video by josephsmith3 | Photobucket

    Youu can see the greenish dust kicking up as I sweep the stairs. This stuff was all over my pool.
    18ft/40ft, 29,600 Gallons, Vinyl Liner, Hayward Perflex Extended Cycle DE Filter, Hayward Super Pump (HP1), Hayward CL220 Chlorinator

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    In the Industry

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    Re: Pressure Problems

    Just a thought: Perhaps it's time to clean your grids with a filter cleaning solution? Eventually the grids get saturated with oils, lotions, etc?

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    Re: Pressure Problems

    What are grids?
    18ft/40ft, 29,600 Gallons, Vinyl Liner, Hayward Perflex Extended Cycle DE Filter, Hayward Super Pump (HP1), Hayward CL220 Chlorinator

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    Killeen, Texas
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    Re: Pressure Problems

    Quote Originally Posted by Dimes View Post
    What are grids?
    They are a plastic grid style mesh filter element that goes inside of a DE filter I believe.

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