Before I moved to phoenix we sold our 90 gal reef to my high school for a few grand. A few grand didn't nearly cover the costs but still cool none the less. My favorite thing about a reef tank is its ability to run itself filtration wise. Once a balance is achieved the damn thing runs itself. No more water changes, no filters, no maintenance. The tank was running stable with a about 120 lbs of live rock, a plenum (sp?) , with periodic skimming. Can't wait to get back into it!
My tank after the move