12 gallon long stocking suggestions?

[ptran]

I think that is perfect size for a colony of Shellies.

[Austy16414]

Scooped a 12 gallon Mr. Aqua from Thien (standup guy), now trying to figure out some options. I've decided to embrace our tap water and go with a hard water setup. I picked up some aragonite sand and I've got some nice black lava rock on the way, now I'm looking for some livestock suggestions. What would you stock with?