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					Originally Posted by  Mrfish55
					 
				 
				just added some fresh carbon and changed out the bulbs on the uv sterilizers 
			
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 Sorry to hear about your situation.  

  Here's a bit of a long shot...adding carbon and new UV bulbs around the same could have caused enough changes in the water to stress the fish.  Not much you can do about it now, but hope for the best.  If it really is marine velvet though, you're probably hooped.  
