On 3 Jul 2006 07:59:20 -0700, "Etienne" wrote:

Hi,
We have seen many alternatives on filter media - ( plastics, rock,
shredder,..), but does anybody has experience with using magnetic tape
( video, audio) as filter media?

Magnetic tape is: A plastic tape coated with iron oxide for use in magnetic
recording.

I don't know if you'll get an answer, but if not, you could always try some
in a bucket with a fish or 2 and an airstone and see if bio-bugs will grow
on it, if it is toxic to the fish, etc. ~ jan
-----------------

Also ponding troll free at:
http://groups.google.com/group/The-Freshwater-Aquarium