Re:Bioballs / Biomedia

[Jared Weinberger <jared at brainyday_com>]

Don't forget Eheim's ceramic cylinders, Ehfimech. The surface area per unit 
volume is the same as miniballs. They are very easy to rinse and never have 
any appreciable buildup, which tells me that biofilm sloughs off well. The 
cores don't clog. For what it's worth, Eheim claims that the hollow design 
helps even and distribute water flow through the media. BTW, vol. I of the 
Baensch *Marine* atlas has a section on biomedia with photomicrographs and 
a surface-area table.

Jared

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Jared Weinberger
http://www.brainyday.com/jared