Originally posted by Fishman830
i feel if you have ample filtration(protein skimmers) and enopught swimming spac eit should be fine, and nto a huge bioload and fewer fish
I'm not looking at this from a biological load perspective, but rather a space perspective. Biological load shouldn't be too much of a concern, as long as you have an ample supply of water volume and some good chemical and biological filtration. Tank size is your biggest limitation. A 65 gallon simply does not have the dementions to house a fully grown tang of any kind. Tangs are grazing fish, requiring ample space to swim. While it is true that we cannot supply the fish with as much swimming room as it will have in the wild, we should aim to put it in the biggest environment as we can. Why put a fish in anything but the best environment? Shouldn't we try to duplicate what they would have in the wild as best as possible? While it is true that you have the choice over what you want to put in your tank, the fish (or coral) don't. They are unable to speak their mind, and state that they would prefer a larger (or smaller) environment.
But, I completely agree that this is a highly debated subject. There is no true answer to your question, although it's up to you to consider the fishes health and happiness.
Take Care,
Graham