[Zippy]

Yesterday I added a small airstone to my new betta's tank. The bubbles made him nervous so I stuck a cylinder shaped Fluval pre-filter sponge over the airstone. I pinched off the open end of the sponge to keep the airstone and airline in place.

Did I essentially create a sponge filter?

 

[scribbles]

yup... dont forget to clean it once a week or so.

 

[Zippy]

I thought I might have! Cool, now both sides of my divided 10 gal tank have filtration.

Thanks Scribbles, for your quick reply.