Noisy venturi

Discussion in 'Protein Skimmers, Mechanical Filtration' started by gaboon, 23 Sep 2008.

  1. gaboon

    gaboon

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    I woke up this morning to a noisy venturi, already driving me nuts! Skimmer is run on an aquabee pump. What could it be?
     
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  3. leslie hempel

    leslie hempel Moderator MASA Contributor

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    have you closed your stand with wood yet? it will silence the venturi.. i dont really like to put air filters on my air inlets as it does restrict air injection a bit...
     
  4. SIMS

    SIMS

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    Yea agree with Les. Those silencers don't do the skimmer any good.
     
  5. gaboon

    gaboon Thread Starter

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    It sounds like the venturi is gurgling water. I'll check it when I get home tonight.
     
  6. ben lloyd

    ben lloyd

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    Gaboon just drop one pinpong boll in, it will settle in the venturi and will eliminate the noise.
     
  7. gaboon

    gaboon Thread Starter

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    Ben please explain that.
     
  8. jacquesb

    jacquesb Retired Moderator

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    Gaboon - sometimes the air-pipe connected to the venturi's become clogged. There could indeed be some water droplets (from condensation, splashing, etc) that have come into the venturi air-pipe.
    A few things you can try:
    - drop a very small amount of vinegar into the airpipe
    - drop some RO water into the airpipe
    - enclose the airpipe for a few seconds, that a vacuum is created within the airpipe -> on the release of the airpipe, the vacuum will force air through the venturi, forcing any/all blockages to be forced "clean" into the pump and into the skimmer.....
     
  9. gaboon

    gaboon Thread Starter

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    Thanks jacquesb!
     
  10. ben lloyd

    ben lloyd

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    if the suction forms an venturi on the water surface it will suck air into the pump that will make a big noise, what we have done in big pump stations where this problem occurs we throw tennis balls onto the water, and that will prevent the pump to create a venturi .Normally a venturi starts when the water level is to close to the suction pipe,so what you can do is to rise your water level.;)
     
  11. hotdog83

    hotdog83 Clone Fish

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    I don't understand Ben, is that to stop the Venturi from forming in the first place? For the skimmer, you will want to have a venturi to have it work at all?
     
  12. ben lloyd

    ben lloyd

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    thats to stop the venturi completely if you dont want air in your pump
     
  13. gaboon

    gaboon Thread Starter

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    You would think I knew this by now... If I remove the pipe to check, will water come gushing out the pump? (AP600 external skimmer)
     
  14. jacquesb

    jacquesb Retired Moderator

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    Gaboon - no - don't remove the airpipe... why do you want to do that?

    If I understood you incorrectly, please explain? Which other pipe would you be talking about?

    And, IF you indeed decide to remove the airpipe onto the venturi, your skimmer's venturi WILL suck water instead of air.... so the skimmer will just stop producing bubbles for the time that you remove the pipe for....

    BEN - I think that you might be talking about a VORTEX............. not a venturi?????
    Right? My 2 x ReSun's do that too...
     
  15. gaboon

    gaboon Thread Starter

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    Just wanted to check if there was water in it. I'm assuming if the venturi sucks air then no water should come out of the pump while I check. Gonna try your idea first.
     
  16. viper357

    viper357 Admin MASA Contributor

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    What I normally do to clean out my airlines from salt etc. is to fill a cup with warm RO water then place the airline in the RO water and let the pump suck the water through.
     
    Last edited: 23 Sep 2008
  17. gaboon

    gaboon Thread Starter

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    Shot viper.
     
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