The best thing to do is buy an angel and put it in a new FOWLR
Leave it outta the reef, a bunch of people have tried it. Claimed, "Oh, not my angel, he's soooo well behaved" and then chomp! at least $100s of dollars in coral down the tubes. And guess what! You still have to catch the fish.
I took a chance with something like this once. You have to be super careful with what you put into your tank before you do it or else you'll hate yourself afterwords.