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Thread: DE powder on the pool floor

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    DE powder on the pool floor

    I have a similar problem with brand new FNS Plus Vert. DE Pentair filter, 48 sqft. IG Vinyl pool, 12K, 1 hp motor (1 speed), NoCal.

    The difference being that we're still working on start up due to cartridge filter failing 2 weeks ago. So, algae problem. The difference is that
    on the second grid cleaning we discovered that only a top 1/3 band of the filter grids got coated. How would that work with water exposed
    areas getting coated only? I read "Use & Care". Of course we always wait for water gush before shutting of air valve.

    Also, there's a decent amount of DE powder on the pool floor even though we used a kitchen scale to measure out exactly the recommended 5 lbs.

    I'm asking here because if I call service ( our dealer and installer) I won't see them till later next week and there go another bunch of expensive chems..
    not to mention that the water is warm & inviting....
    thanks

    dada

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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: DE powder on the pool floor

    Welcome to TFP!

    If DE is getting into the pool, there is something wrong with the filter. The most likely cause is a torn filter grid, though it could also be an improperly assembled filter or a problem with the multi-port valve.
    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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    Re: DE powder on the pool floor

    Hi,

    Our new filter came with an already obsolete (black) manifold. The problem was a crack real close to the external white pipe air bleed entry.
    Since we've had this less than a week and it is a well documented problem, our service company replaced the manifold with the newer model (white).
    It is a ***** to put together the grids but it was not an operator error... phew!

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: DE powder on the pool floor

    I'm glad you got that figured out
    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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