Sponge Filters...anyone using them?

[MadameDesu]

Originally Posted by Hallyx

Hydro makes deluxe sponge filters. One advantage is they can use an airstone, which actually increases the flow through the filter. The Hydro '0' will work in a 3 gal.

Another helpful tip that I found on another forum. Instea of using an airstone which you'd have to replace, one user cut "teeth" into the airline tubing end that was in the lift tube. They claimed that this helped to break up the bubbles.
I can link to that thread if anyone would like a picture :)

[Hallyx]

Originally Posted by xfeejayx

I bought the big version of this. Mine is on a powerhead, but this should work fine with just air. Has lots of area for bacteria growth. There's smaller ones out there if you want, also.

NEW Aquarium Biochemical Sponge Filter Fish Tank Air Pump | eBay

That's a good little filter, much better than the Tetra 3i. It's available on Amazon for even less. And if you already have the pump....

Someone on a DIY CO2 thread claims using a cigarett filter makes the finest bubbles of all. There IS a limit. LoL