Honestly if i were you i would get rid of the bubble tip as well. I mena if it were me i would get rid of all the coral as well. For now. Just give it time to let your tank mature a little. So how many fish will you have once you take back the two angels? I hope you have learned you lesson with al lof this. You know if you would not have purchased the fish to begin with then you would not be inflicting even MORE stress on them to return them.