Okay, thanks for the heads up. I guess I didn't even think it would matter, so I was using the bio-sponge as a mechanical AND bio filter, while the floss was being used as a polisher of sorts. Nevertheless, I don't much care for the stock media, and have been thinking about what I could do to customize it. Thanks for the idea!
Oh yeah, and just for the record, this is the Red Sea version of the same filter. I know they are both probably manufactured in the same factory, but I figured I'd at least point that out.
