A friend of mine in Japan has been maintaining a number of non photosynthetic gorgonians and corals for over a year now. So obviously it's doable, although it may be difficult. I love her tank, but it makes me cringe to see her feeding her tank a few times a day with so much food, knowing that the tank is plumbed with her husband's SPS tank :eek2:.
Here's a video of her feeding the tank of gorgonians:
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