I had the same problem. All it would do is pick at the live rock. I got some frozen angel food, and smashed it into a hole in the live rock. That helped get things started, but it still took a few weeks to start eating what I was feeding. I guess mine was just living off of what it got from the rock. Now it's eating frozen formula 1, frozen formula 2, frozen angel food, frozen prime reef, formula 2 pellets, mysis, and spirulina flakes. My GSM was the most aggresive feeder with everyone else backing off and grabbing the left overs. The Coral Beauty is right there in the middle of everything come feeding time now. It may take some time.