Our Naso Tang had an accident with the sump return tube in our tank. He got caught in the current and slammed into the top of the reef. He did escape, and appeared ok for about a day. He then, started swimming along the bottom and finally started to fold in half on his side. We put him in our quarantine tank and he is still alive after two days. He is on his side and is not able to swim upright. His side fins are moving and he is breathing, but he can't swim or eat. We have been trying to keep him from getting tangled in the caulerpa. At the very least he is surrounded by his favorite food. Is there anything else we can do?