I am one of the founding members of the Southern Colorado Marine Aquarist Society, SCMAS. I started out with a 125 that was freshwater and converted to Saltwater. I moved it once, at two years, from upstairs to down in the basement and two years later, decided I wanted to go bigger. Here is the chronology of the build;
http://www.thescmas.com/forums/showthread.php?t=2380
http://www.thescmas.com/forums/showthread.php?t=2380