thanks guys, its a 600. The purple was first, then the 5 yellows were all added 1 day, then I added a sailfin. Later on the others. The only fighting is between the yellows from time to time chase each other. The convict chase each other sometimes also. The other tangs never seem aggressive to any other fish. I dont feel I could add another zebrasoma at this time though. I was given a healthy scopas from a guy tearing his tank down. I knew it was risky but tried anyway, they had it shredded and dead within 24 hours.
Yeah I felt really bad, and never would have bought another Zebra sp. but he had to give it to me as part of the package I bought and it needed to go that day.
I've had all these tangs together since late 2005 so I think it proves if you have enough water and introduce several of a specias at one time you can be succesful sometimes.