I really liked the idea of this contest.
There will be lots to learn as I haven't kept a nano before. I think the smallest reef tank I ever had was my first @65 gallons.
The display is about 15 gallons, kind of a short cube.
I added a good sized sump with a Marineland steath heater, and a Tunze 9010 skimmer.
There is just water in it now.
I also have a four bulb T-5 light to hang above.