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 Post subject: Polygeyser Biofilters
PostPosted: Sep 12th, '08, 21:29 
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Hello all!

It's the intern again! A quick question about polygeyser biofilters. Do they work/work well in a gravity-flow system? Or do they require a pump?

Anyone who has had experience with one and has any information to share would be greatly helpful!

Thanks so much,

Ashley


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PostPosted: Sep 13th, '08, 09:38 
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make you a deal. link some info regarding polygeyser and i'll give you my opinion ;)

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PostPosted: Sep 13th, '08, 10:01 
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Seriously, this cant be healthy.
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:roll:

http://www.aquaticeco.com/subcategories/2923/Polygeyser-Pneumatic-Bead-Filter-Pump-PR-Series

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PostPosted: Sep 13th, '08, 10:09 
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LOL i was trying to get the newbie into the spirit of things. :roll:

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PostPosted: Sep 13th, '08, 10:15 
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looks like it would be a good choice if you wanted to remove the solids and run NFT or DWC.

no washing of filters or anything and you could use the solids on your dirt garden.

The consensus here, i think ;), is that you will have much more luck in the fruiting variety of plants if you retain your solids in the system.

all depends on what you want to grow, what system you would like and how much space you have.

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PostPosted: Sep 13th, '08, 10:22 
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Seriously, this cant be healthy.
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hehe I knew you'd like that Steve :D

I would just use a couple of barrels filled with gravel, spending money on commercial gear, when home made works fine, seems strange to me.

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PostPosted: Sep 13th, '08, 10:49 
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this is very true OBO.

blue barrel filled with gravel before NFT runs works a treat, is about $2900 cheaper, and gives you the benefits of retaining solids :)

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PostPosted: Sep 13th, '08, 20:08 
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Quote:
...you will have much more luck in the fruiting variety of plants if you retain your solids in the system.


Could someone elaborate on this? By fruiting, do you mean vegetables (i.e. cucumbers, beans, anything that develops from a flower bud) or actual fruits? Why would the solids benefit some plants but not others? Is it better to stir the bottom of the tank to get the solids mixed in the water and out to the plants?

What nutrients are in the solids that are not in the water?

I have only been doing AP for a year and have never tried to remove the solids from my system. I have wondered whether I should but thought they probably did some good. They have not clogged my pump or pipes.

Thanks.


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PostPosted: Sep 13th, '08, 20:47 
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I think the original question was not answered (probably because none of us has experience with said filter) That question was does the polygeyser biofilter require a pump or could it run just fine from gravity? Sorry don't know.

On to the solids question. In a system that uses flood and drain media beds for the plants, the solids do have nutrients that benefit the plants. In a system that is using DWC or NFT, solids need to be removed from the system to avoid low O2 situations and rot. The main evidence I've heard for some of these arguments is that most of the commercially available Aquaponics kits out there in the past had bio filters and solids filters for removing solids and the plants were grown in DWC or NFT. They apparently were only really good for growing green leafy plants. This sounds to me like much of the phosphorus may actually be in the solids since in flood and drain gravel beds that effectively are the solids filters (but don't get cleaned out of those solids) seem to grow fruiting plants (tomatoes, cucumbers, peppers, melons, squash, etc) just fine. To deal with solids in the grow beds and help in making nutrients available to plants, a handfull of composting worms into the media filled flood and drain grow beds seems to do the job wonderfully. And yes, worms do survive just fine in media filled flood and drain grow beds.

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PostPosted: Sep 13th, '08, 22:22 
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Rponda, consensus is that the solids form the major park of the K and P nutrients. Systems that remove solids tend to have trouble setting flowers and fruits (as do systems that are quite young)

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PostPosted: Sep 14th, '08, 00:22 
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I am designing and building my own DIY gravity floating bead filter.
will post pictures and drawings when it is ready.
probably within a week.

In the meantime here is some elaborate info on how to calculate them:
http://koishack.com/forums/index.php?ac ... t&id=32966

I intend to take out the solids before the NFT gutters and then partially reinject them just before the growbeds

the remainder (if any) will go into my worm bin to obtain some quality protein to feed to the fish
this will give me more flexibility with regard to fish density/growing space

The news about K and P is worrying as I was planning to grow some tomatoes in NFT
Would the growbed transform these nutrients into soluble form?
In that case I will put the tomatoes and cucumbers only in the return line from the sump to the fish tank which is also NFT

frank


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PostPosted: Aug 26th, '18, 14:07 
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I am thinking about building one to clean out the mineralization tanks so I can transfer the sludge more efficiently to the worm bins which is the actual driving force of my operation now, bacteria eat the fish poop, worms eat the bacteria and food scraps, the plants feed from the worm waste

The fish are just in the system because people see fish as clean and worms as yuck :P

MBBR just help do the nitrogen cycle faster but still need to find a better way to pre break down the solids so they do not foul up the grow beds ( aka need to force it down the worms mouths faster :P )

I am trying to keep each tank in a closed loop system as I have gone back into breeding aquarium fish
but having all systems sharing the same mineralization tank
swirl filter / radial flow help with that


I know that the inventor ran their bead filters from just airlift pumps which is the main method I use to run my operation apart from the 1 sludge pump I use to move 1 IBC worth of biowaste 7m up the hill daily before it passes through the 30 odd worm/BSF farms

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