iloveengl

My Aqua-tech 30-60 OTB filter (came with used tank) doesn't have the bio-fiber (the never-needs replacing thingy).

1. Does anyone know a way to make a substitute? I've never even seen it, so I don't know where to begin.

2. Is this something I NEED or can I start running the filter without it (using just the normal replacement cartridge) and then stick the bio-fiber one in later as soon as I find/make it?

Thanks.

Btw I found this DIY filter cartridges fot penguin&emperor & I'm definitely going to use these ideas after my replacement filters are old. So cool!

10gallonmadness

A sponge is great bio-fiber.

Lucy

You can buy any filter sponge and cut it to size.

coffeebean

i agree with a filter sponge. most of my tanks have sponge and poly fill in them

iloveengl

Okay, thanks! I didn't know what the bio-fiber looked like, so I wasn't sure if it was a simple solution. Sounds like it is! I'm off to petsmart - thanks again for tip!