Quote Originally Posted by LoneStar View Post
Cram a chamber full of live rock rubble.
On other sites they tell you to use a sponge with Filter Floss.

"The sponges are only a nitrate trap if you don't frequently wash them out.
I only use one in the first chamber with floss on top. I wash it out with my waterchange water.

IMO the live rock rubble is just as much a nitrate trap if it is not periodically cleaned. "