I have a 65 with a sump (don't remember the gallons) that is pending lights and chiller. Plan on getting 4-6 erectus, but it will be a mixed reef. Right now it has a tail spot blenny. So far I want to add a few barnacle blennies, firefish, a pipefish or two, possibly a wrasse, possibly some cardinals. We will treat the tank like a giant refugium, lots of macro algae. And lots of soft corals on the rockwork.