Soaking in Garlic

[Jaws]

I have a Powder Blue Tang that was eating at the fish store but so far has not showed any interest in food in his new home. Just when I think he might be showing interest, my yellow tang takes a run at him and scares him away. I've heard a few suggestions about soaking in garlic to try and tempt a fish to eat but I'm not sure what process is used. I have a jar full of minced garlic that has quite a bit of liquid in it as well. Could I soak some nori in that or would you recommend something else. Any other suggestions would be appreciated as well. I know these fish can be very finicky but he's very healthy, very active, and was eating at the fish store so I thought I'd take a chance. I have a 180G tank so lack of room is not an issue.