Here are a couple T5 only tanks that were tanks of the month on Reefcentral:
http://reefkeeping.com/issues/2008-07/totm/index.php
http://reefkeeping.com/issues/2007-10/totm/index.php

For a much more modest application you can see my T5 only 30 gallon in this thread: http://www.maast.org/forums/showthread.php?t=47906