Moving bed bio filter

Discussion in 'DIY - Do It Yourself' started by koiguy1969, Aug 20, 2017.

  1. koiguy1969

    koiguy1969 GIGGETY-GIGGETY!!

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    Ok.. I made my moving bed slightly different than most.. my inlet is ran about half way down the barrel and turned back upwards in the center of barrel.. I used a solids handling "T" (because I had one) at the top bend downward. It's capped with black cap. This is all 1&1/2" pvc. IMG_20170820_145144821.jpg
    Here's the rest of the input plumbing IMG_20170819_171914308.jpg
    The upturn is caged to keep any media from being syphoned back into pump, or clogging the input plumbing anywhere... should the power go out etc... IMG_20170819_164917226.jpg
    No picture but the output plumbing is 2" PVC. It goes down to an inch or so from the barrel floor, and is wrapped with 1/2" mesh plastic hardware fencing to the floor of barrel, ziptied on. Making a 1" gap between pipe and floor with a cage to keep media from escaping into pond.
    The reason I built this way is to mimize the air requirement to Power the movement. (The pumped water does some of the work.)
    The air pump is an 18 watt, 570gph, $15.00 eBay special. IMG_20170819_164315734.jpg
    It takes 1/4" line.. I ran it down to bottom of barrel.put a"T" on it with a 8-9" loop. I drilled a hole every 1/2" in the loop. It's ziptied to a scrap of light grid. I set a rock on the grid to hold it down. This also allows me to easily pull it out, should the holes clog with build up, and it allows me to adjust placement for best performance. IMG_20170819_164337965.jpg
    Hope this helps someone. I should have made a thread when I built this, but, it's been running for a year or more.
     
    Last edited: Aug 20, 2017
    koiguy1969, Aug 20, 2017
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    IPA, Magzire and Mmathis like this.
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  2. koiguy1969

    koiguy1969 GIGGETY-GIGGETY!!

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    What do ya think?
     
    koiguy1969, Aug 20, 2017
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  3. koiguy1969

    budgenator

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    how much water are you flowing through your filter?
     
    budgenator, Aug 22, 2017
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  4. koiguy1969

    koiguy1969 GIGGETY-GIGGETY!!

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    This one is 950gph.
     
    koiguy1969, Aug 23, 2017
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