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Thread: Dirt and D.E. Flowing right back into pool

  1. Back To Top    #1

    Join Date
    Aug 2016
    Las Vegas, NV

    Dirt and D.E. Flowing right back into pool

    Hello pool gurus! I apologize if this question has been asked before. I found similar questions but none of the answers were helpful to me
    and the set ups were slightly different. Here's the scoop:

    Every year I clean the grids out inside of my D. E. filter. I did that this year no problem, even replaced all the grids and manifold two years ago. Everything
    looked great during cleaning, no tears, no rips, no cracks, no nothing. I put everything back together like I always do and turned it all on. I put the new DE in
    fine, no issues, all was good. Slowly over the last 2 months or so I have noticed that more and more of the dirt and debris that the vacuum picks up winds up coming
    right back through the jets back into the pool.

    I back washed, I took apart the whole filter again, checked everything again, put it all back together, added more D.E. and then it got worse. I have been doing this since
    I was 12 years old and have never experienced this blow back issue. It is to the point now that literally anything it seems passes right through the filter and back into the

    I am afraid to check out the spider gasket that I have been hearing about, which honestly I don't think I even have because my set up looks nothing like anything I have found on the internet.
    In other words I have a handle that I can turn a quarter turn and pull up to backwash, not the style that has the handle on the top that you push down and rotate to a different setting. Also a
    pool guy we had years ago who re-did our whole filter made a mark with paint on the top of some similar looking crank manifold and just said, "Don't ever move this from this position." So I have
    no clue what that even is for or does.

    Any help is greatly appreciated! Thanks!

  2. Back To Top    #2
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    South-Central Texas, Marion/San Antonio

    Re: Dirt and D.E. Flowing right back into pool

    Hello and welcome to TFP! Sounds like you have one of the plunger valve set-ups like seen here: Filter Backwash Valve Leaking or Stiff -Replacing the Stem O-rings - YouTube. They do have a couple O-rings inside, so maybe this video will help you a bit. Let us know if you still need help and we'll keep this thread moving for visibility. Nice to have you with us.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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