Customizing Marineland Penguin 350

[g_fish_jose]

I'm running a penguin 350 on my 55 gal tank. I want to ditch the pre-assembled cartridges for a variety of reasons. One suggestion was to simply use filter floss. I am not sure what other people are doing or how they set up the media in the filters. I'm familiar with the AquaClear style of stacking components, but am confused by the arrangement of cartridges in the Penguin.

Thanks!