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Home: KOI Talk: DIY Corner:
DIY BIO Filter from Diatanegious Earth Pool Filter

 





 


jimar1
Koi Lover

May 26, 2006, 8:26 PM

Post #1 of 8 (1078 views)
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DIY BIO Filter from Diatanegious Earth Pool Filter Can't Post
I have made a Bio filter from a pool filter... Filter still contains the 'filter elements of nylon' ..no earth ... Filter is 3 days old . . . appears that little to no filtering is happening in that the water continues to be dirty or cloudy . . . pump turns over water 2 times an hour...
Will the waste gradually accumulate in the filter and clear the pond??? . . . or will the bacterial bill-up causing the flltering to start??? Should I add somthing to assist the filter action at this time . . .
When Back-Washing the filter will I loose all of the bacteria or just the waste...?

Thanks,
New BIO Filter owner!!!
Jim


larz1
Koi Kichi


May 27, 2006, 2:43 AM

Post #2 of 8 (1070 views)
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Re: [jimar1] DIY BIO Filter from Diatanegious Earth Pool Filter [In reply to] Can't Post
It will likely take a long time for the filter to establish any kind of bio-action, and it is doubtful it will be very efficient. Filters that are made specifically for Koi ponds take weeks to kick off and months to become well established. How large is your pond, pump, and filter? How well you can expect it to perform will depend greatly on that information.


jimar1
Koi Lover

May 27, 2006, 4:12 AM

Post #3 of 8 (1061 views)
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Re: [larz1] DIY BIO Filter from Diatanegious Earth Pool Filter [In reply to] Can't Post
Frown...Was afraid of that!.. Pond is about 2500 gal. Would hope that it would be clear as it is only 2 ft deep... very long ...
Have an Old Pool Cartiage filter that I was considering 'gutting' the 'paper/fold canvus/etc/ and rapping the certer of the cartiage (a 4.5 inch round PVC pipe) with an aquarium filter pad.... for extra filtering capacity....OR... even putting just a bit of Diatanegious Earth(powered bone) in the Bio filter to assist in filtering... of course, periodly doing a back wash and 'dumping' all of the waste,D. Earth, etc along with some of the bacteria (hopefully not all of the bacteria)

Suggesting as to other cartiage 'fillers' rather than using aquarium pad filter material???
Jim


larz1
Koi Kichi


May 27, 2006, 7:32 PM

Post #4 of 8 (1047 views)
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Re: [jimar1] DIY BIO Filter from Diatanegious Earth Pool Filter [In reply to] Can't Post
It sounds like your pump is big enough, just the wrong approach on filtration for Koi water. Diatomatious earth is great for pools because it is so fine, but clogs quickly in pond applications. Sponges don't really last long either. You might just want to take a look at Koi 38's "Simple Drum Filter" thread. You can use your pump and his DIY filter setup pretty easily. And it is much less expensive than buying a factory system.


jimar1
Koi Lover

May 28, 2006, 12:25 AM

Post #5 of 8 (1031 views)
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Re: [larz1] DIY BIO Filter from Diatanegious Earth Pool Filter [In reply to] Can't Post
Thanks,.. look at the Simlpe Drum Filter... appears to me it is the same principle as a swimming pool cartriage filter..... just larger.... think he is using...'static k1' as a filtering product!!!!.... whatever that is????? ...and where to get it.... Ideas as to what it is???... did ask ... but no reply ... so I'm looking for a good filtering agent....to put in the filter....easily replaceable and/or cleanable....
Jim


larz1
Koi Kichi


May 28, 2006, 1:49 AM

Post #6 of 8 (1028 views)
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Re: [jimar1] DIY BIO Filter from Diatanegious Earth Pool Filter [In reply to] Can't Post
Static K1 is a semi-bouyant plastic media that traps solids which are easily backflushed through a bottom drain. The Drum filter system is not pressurized unlike a cartridge so you pump much more water with less electricity consumed. Read the entire post and you'll see multiple stages of filtration performing different types of filtration, but it is still very simple to build and maintain, and you don't have to spend money on new cartridges when they eventually plug up too much to backflush.
You also might want to look at Tao BKK's Moving Bed Filtration system. He and Koi38 use many of the same principles, even borrowing good ideas from each other.


(This post was edited by larz1 on May 28, 2006, 1:53 AM)


jimar1
Koi Lover

May 28, 2006, 2:46 AM

Post #7 of 8 (1023 views)
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Re: [larz1] DIY BIO Filter from Diatanegious Earth Pool Filter [In reply to] Can't Post
Think I understand the drum system ... I have removed all the material from the 'used cartriage filter' leaving only the center . . which is a PVC cylinder... effectively... a drum (the remains of the cartriage, the PVC cylinder) within a drum (the outside of the filter, the filter housing or canister) ... Pond water enters in the space between the filter housing/casing and the centered PVC cylinder... the water is pulled into the center of the PVC cylinder throught some filter material and goes to the pump.... I understand the pressure situation... but space is a slight problem in my case so with the use of pressure...I process/filter as much or more water given the amount of space... pump will handle the pressure ... but I do need a filter material such as Static k1.... where do you purchase this material . .. and how much does it cost per foot, yard, etc... Have read where others are using 'bird screening' ..??? which would be better as a filtering agent??
Jim


larz1
Koi Kichi


May 28, 2006, 7:02 AM

Post #8 of 8 (1020 views)
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Re: [jimar1] DIY BIO Filter from Diatanegious Earth Pool Filter [In reply to] Can't Post
In your case either might work well for biofiltration. I'm just not sure how often you'll have to backflush. I would pack it with the bird screening as it is less expensive. That way if it doesn't work well you aren't wasting a lot of money.
You should be able to buy it at a farm supply/feed store or a large hardware outlet like lowes or home depot. If you decide to go with Static K1 you'll need to find a pond supply store in the Tampa area that carries it or look on ebay. There are several sellers there that sell generic K1 lookalikes that seem to work well.
Bear in mind that this setup won't perform as well as a larger one so you'll need to keep your fish population to a minimum. Good water keeps fish healthy. Bad water is a headache and keeps them sick.

 
 
 



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