I disagree on ALL ick comments. When I buy a fish (it's been 5 years now) I treat the fish for parasites. I treat the fish for bacterial infections. Does it have them. I don't know. I don't care. The point is my fish are healthy. NOTHING goes into my main display unless it goes into quarantine 1st. ANY fish the goes into the main display MUST survive medication/treatment. I have a FAT powder Blue, Fat Purple and Yellow Tang. I promise you, NO ICK! So it can and should be done. That's my view anyway.