High Flight wrote:
On rec.aquaria.freshwater.misc, Michi Henning
says...
"matt23983" wrote in message
s.com...
Does all biofiltration have to be wet/dry as in the bio-wheel?
Would it be feasable for me to get a couple of bio-balls and drop
them into my Aqua-Tech 5-15 filter, would that work or do the
bio-balls need to be wet/dry?

Biologic filtration works submersed too. It's just that it isn't
quite as efficient
because, with a wet/try or trickle filter, the bacteria get more
oxygen to work with. But you could certainly do what you suggest,
and it would work. But, instead of bio-balls, I'd consider sintered
glass (such Ehfi Substrat or similar). I think you get more surface
area per volume that way than you do with bio-balls.

Or you could use a Millennium filter, which injects air into a
submerged biogrid.

Jack, do you have a web-page for that?

Cheers,
--
~misfit~