What kind of filter is this?

[MrHarris]

What is this, where can I buy media/mechanical media replacements?

 

[zerokreativity]

I think it's one of these:

http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=4638

Replacement items are shown on the page.

 

[JAK]

ac power head with a quick filter.

 

[MrHarris]

Thanks a bunch guys. I would've never guessed