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Thread: Pond filter has Natts ??

  1. #1
    Nisai
    Join Date
    Sep 2014
    Posts
    55

    Pond filter has Natts ??

    I openned the lid on my first stage filter of 2 filters 2nd is a moving bed filter, and it has alot of live natts, is this normal, or ok??
    Chris in Portland Ore. Outdoor 1000 gal Koi pond

  2. #2
    Nisai Jimbo's Avatar
    Join Date
    Mar 2006
    Posts
    132
    Sounds like you have Midges. Happens all the time. They can reduce flow in your pipes over time.

  3. #3
    Nisai
    Join Date
    Sep 2014
    Posts
    55
    is there a cure or should I not worry?

  4. #4
    Daihonmei MikeM's Avatar
    Join Date
    Dec 2003
    Location
    Orlando, Florida
    Posts
    11,128
    IMO, do not worry about it. It is unpleasant to have them swarm out in your face, but no harm to the koi.

  5. #5
    Nisai
    Join Date
    Sep 2014
    Posts
    55
    THANKS everyone, you all are always a great help

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