I just purchased 3 blonde naso's on 8-19-13 . they are one male about 6" and two female's about 3". I have a 220 gallon tank with a 75 gallon refuguim a 30 gallon sump and a bioball sump totaling about 350 gallons. all peramiters are within spec. so now to the question . they haven't eaten since I got them. some light pecking at alge on the rocks but that's it . last night I bought garlic extreme and soaked some brown and some green nori in it . I placed both pieces in the tank on separate clips at either end of the tank. still no eating . woke up this morning and both clips haven't been touched. I have 2 anthias , 2 gold stripe marrons . and 2 chromis and a snowflake eel. so the tank is not over stocked. any help would be appretiated. thank you