I'm with Salty on the stocking numbers. Although some get away with large bioloads it isn't something I'd recommend to someone because of the high potential for problems. I also endorse not getting the dragonette at all in a tank that size, I don't feel you'll be able to keep it supplied with enough pods. They aren't the only fish to eat pods so the other fish will eat them as well and as fast as a dragonette eats them they'll go through your supply rapidly..less than a week in many cases.