For quite some time me and my brother have been wanting a Purple Tang for our 90 gallon reef. From what live aquaria says that isn't enough room for him but other sites claim differently. I have seen that they could be fine in a 75 and my LFS
has even kept one in their 65 gallon reef sytem for over 5 years.
So i was wondering what really makes a habitat for them, because it seems that the tank size can be a bit flexible. Also, if i already have a yellow tang would they fight? i read that they are both pretty docile as far as tangs go, maybe just find a smaller purple then my yellow? I'm not looking to rush into this and wanted to get your guys advice because the last thing i want to do is endanger either fish.