[globaldesigns]

In regards to the copperband butterfly, I would suggest NOT getting one. They are very hard to keep and most reefers are unsuccessful in doing so. I am one of them and tried twice, but couldn't keep them alive.

With chromis, don't do it... they don't really school, somtimes they are playful and chase each other. But more importantly in my case, they are digging burrows under rock/sand, and always causing a sand storm. I hate mine!

Angels: I love my Potter's and Flame, they are beautiful. But remember that they may nip at corals. In my case, they don't. Glad I have mine, but beware with the coral.

With Tangs that is a preference thing. With the Powder Blue, again one of the harder to keep, many will say the same as me. Try it if you want, but this species may die on you. Again I speak from experience.

Also with tangs if you add them at different times, as you already know you may have issues. If adding independantly, then choose the least aggressive first then move up. But if you can add them at the same time, then they all should be fine together. I personally have a yellow, hippo and sohal tang without issues. The sohal being the most aggressive in nature, but I am lucky and have one that plays nice.

I hope this helps.