Rated 5 out of 5 by 1
Rated 5 out of 5 by number20121 wonderful filter media
I actually use this (cut up) as filter media in my hang over back filters, instead of the expensive cartridges.
This material offers an incredible amount of room for beneficial bacteria to attach to, and it also is very durable even in a slightly overstocked goldfish tank.
January 19, 2011