Well, I have a fairly established tank and I've always wanted to add a Powder Blue Tang since day one... I have a False Lemonpeel Angel that's been in the tank for almost a year; it can be a brat sometimes, but never acted like this before. I just added the Powder Blue Tang and the Angel is voraciously chasing it around the tank. I have had the lights off for a day and a half now, and as long as the lights are off, the Angel doesn't bother it, but when the lights come on, the chase ensues. I'm really afraid to leave the lights on in fear that the Angel will tear it to shreds, but they have to come back on sometime... My line of thinking was that the Powder Blue would be so much larger than the Angel and be able to fend for itself... but that doesn't seem to be the case... The Tang has been nibbling at algae on the rocks, which is a good sign, but still looks like it's in a bit of shock and seems somewhat stressed. It hasn't touched the nori (red and green) that I have on a veggie clip or the mysis I tried feeding it. I'm really worried.... So, do you guys think that I should turn the lights on and see if the tang will make it or leave the lights off for another day or two for the tang to recover? I've left the lights off for a couple days before and everythings been ok, but I'm a little worried about going much over two days... My other option is to maybe take the Tang back... I think it'll be fairly easy to catch as it still doesn't know it's way around the tank... I really want this fish, but I don't want to see it die. Looking for your positive thoughts and advice... Thanks!!