Dan,
Right now I have the 120, 55-ish clam, 29, 16, and 2-6 or 7 g bowfronts. For the most part they are self-regulating. I have to do very little other than feed and a 1 a month-ish water change. Right now I make up a 50 gallon change a month to distribute among the tanks, changing more in one if it looks unhappy. Thank goodness they seem to take care of themselves. I am a little worried about the upkeep on this 180 I am getting since it will be a FOWLR and have no refugium.

Henry- Thanks!!!!!!!