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Growmedia/Bio-filter surface area data?
http://byap.backyardmagazines.com/forum/viewtopic.php?f=8&t=19390		 Page 1 of 1
Author:  Nikenik [ Nov 3rd, '13, 05:29 ]
Post subject:  Growmedia/Bio-filter surface area data?
I'm having some trouble with my koi in my system. The advice I've gotten on the koi forums is to get myself a "proper" filter like a fluval FX-6
Image

But a filter like that only holds 2 liters of bio-filter media.

I currently have 80 liters of clay beads as a growbed plus about 1 liter of "bio balls" in my 375 liter fish tank.
I also filter solids with two "washing-balls-spunge-thingy" and a few cotton cylinders, like you use to take off make-up.
I know the ratio is off in my system but I'm doing water changes until I've built some more grow beds.

Would a FX-6 filled with 2 liters of "bio-balls" like these really filter better then my system??
Image

Any one got any data on the surface area for different filters like bioballs, k1 and expanded clay beads?
Author:  BenBrewcat [ Nov 3rd, '13, 07:07 ]
Post subject:  Re: Growmedia/Bio-filter surface area data?
Clay balls are 45 to 60 square feet BSA per cubic foot according to bright agrotech.

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Author:  Nikenik [ Nov 4th, '13, 20:13 ]
Post subject:  Re: Growmedia/Bio-filter surface area data?
Thanks, but that really doesn't tell me anything without any point of reference.

Do you have a link and some comparison?
Author:  BenBrewcat [ Nov 5th, '13, 00:23 ]
Post subject:  Re: Growmedia/Bio-filter surface area data?
It's a video but he describes several media from sand to gravel and LECA. Good channel BTW.

http://www.youtube.com/watch?v=EKGiXoJMLbo
Author:  BenBrewcat [ Nov 5th, '13, 00:26 ]
Post subject:  Re: Growmedia/Bio-filter surface area data?
I don't think he hits bioballs but wouldn't manufacturer have some data?
Author:  Nikenik [ Nov 5th, '13, 02:07 ]
Post subject:  Re: Growmedia/Bio-filter surface area data?
Thanks, BenBrewcat!
Good link, I've watched some of his other videos, he seems to know what hes talking about.

Now I have something to google, I found another list that showed some of the other commercial.
From what I could read the SSA was about 100-160 for the bio-balls in the picture.
And if the expanded clay beads (LECA) is 45-60 SSA and I have 80liters of them compered too the Fluval's 2liters there's got to be more surface area in my system, right?
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