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			 Aquamansilver, the way I read your post is you are saying even a several day dip in fresh water does not work?  I am sure that anything else in the rock would be dead by now, so whatever I do to that formerly live rock cannot hurt.  Muriatic acid is vinegar, right? 
		
	
		
		
		
		
		
	
		
		
	
	
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