[eznet2u]

Originally Posted by smithj108

The tank shall support various installation options such as; corner of a room (the obvious one), against a open flat wall (would offer two viewing profiles), and finally as a center display (full 360° walk-around).

I took this to mean that he had not decided which way to put it, and wanted to have options.

Originally Posted by widmer

eznet2u - The OP said it would be 3 sides viewable. To me this translates to rockwork coming up the center which IMO would look cool and unique.

With 3 sides viewable the Overflow and returns would also have to be in the middle to hide them, but the OP also states that he wanted it to work as a corner tank and/or Flat.
In either of these configurations, your center Rock/overflow/returns simply will be in the way.