Hey guys, I'm wondering what everyone is running in their Biocube back chambers? If there is any other efficient/successful*ways to set it up other than using a media rack? I plan on keeping it fowlr.*Right now chamber one is empty. chamber 2 has two eshopps sponges for a sump with filter floss on top placed where the water flows over from chamber one. To the left of the sponges I have ceramic rings. And last but not least I took out the sponge in chamber 3 near the return pump and replaced it with chemi pure blue. I hope this makes sense. Does this system sound efficient? *Any thoughts/suggestions on things to do different?