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  • Results 1 to 2 of 2

    Thread: Pre filter for bd

    1. #1
      CharlieQ is offline Junior Member
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      Pre filter for bd

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      What do u think about pre filter for bd

    2. #2
      steve258's Avatar
      steve258 is offline Member
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      i am far from an expert here but i have a similar pre filter (SC) based on the Kent Wallace design found here:

      https://www.koiphen.com/forums/showthread.php?120506

      Ive had mine in service for two summers and it works good for my 2500 gallon pond.
      https://www.koiphen.com/forums/showthread.php?164698

      Will you be using any filter media around output? Like Kent, I use a landscaping basket with a bunch of 3/8" holes. Originally i filled it with dollar store plastic pot scrubbers but later replaced them with my own version of Bacitwist. The Twist doesnt clog like the scrubbers so I've stuck with that.

      One thing that i didnt anticipate was the draw down. Mine is a good 2-3 inches so I had to adjust the center output pipe. Rather than sucking from the top, i drilled a bunch of 3/8" holes in the vertical pipe that sits inside the basket. Pond level also affects this balance. Also, the top of my barrel sits about two inches above pond level but still overflows when i shut off my pump...also unanticipated but i deal with it.

      I didnt see a drain in the barrel. How do you plan to clean it? I have a 2" drain but find it easier and quicker to drop in a sump pump when i do my major cleaning every 2-3 weeks (I tap the 2" drain every couple days to water flowers) 😉
      Last edited by steve258; 02-28-2020 at 02:57 PM.
      ____________
      Steve
      Allentown, PA USA

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