Safe alternatives for filter media

[jroescher]

Poly-fil and Nu-foam products (http://www.poly-fil.com/). Are they safe to use? The 'Under Penalty of Law" label says they are 100% polyester fiber. They are advertized as hypo-allergic.

Any other common item I can use for filtering?

[brewercm]

I use the rolls from Wal-Mart in my drip plate prior to my bio-ball tower.
Ooooh, yes I still use bio-balls, basically for sound baffle though and not for filter purposes.

[jroescher]

Thanks. Good to know.

Wal-Mart = 4 miles
LFS = 40 miles