New Nano-Cube 24 - some questions

[Madmak]

Hi all,

I have been out of the SW hobby for over a decade but was in to SW and FW tanks in the early 90s. Things were a lot different back then...

I have picked up a 24G Nano-Cube with PC lighting and have had it up for a few months now, I will work on a LS list and signature here soon, its looking ok so far. My main question is regarding the various mechanical and biological filtration methods that have been used in these AIO Nanos and which methods have proved successful???

I currently am running:

First chamber (from the overflow down)
1" coarse foam, 3" floss, 1" carbon, 1" chemi-pure, 1" purigen

Second chamber
Refugium with 6" of LR rubble, chaeto, LED light

Third chamber
Oceanic nano-skimmer and return pump

Any ideas or comments are much appreciated.