I like that setup as well. I think that some asstd. geos would go great with an aro. As far s sevs go, Im sorta partial to rotkiels myself, as I like the more natural look, though the reds are good looking as well. Think about the whole Aro feng shui thing, A Big aro on the surface, say a shoal of silver dollars or something in the middle regions of the tank, and a few nice looking geos, Oheads, altifrons, or braziliensis, on the bottom. But Keep it all SA fish, dont pollute the purity of the tank with some sorta asian Dat or funky knife or catfish.... Just my 25 cents.....