I've noticed three or four molts over the last few days, so that's a good sign.
They're not especially hungry though. I dropped in one piece of BorneoWild Grow and a small fragment of Barley, and they each lasted about two days. Everyone is happily picking at the moss, wood, and everything else though, so that's probably better anyway.
Now I just need to move it out of my office upstairs and down next to the couch where I can see it more often!