Have you dosed anything into your tank?  I made the mistake of dosing for ich and it really hur a couple of the heads of my hammer.  They came back just fine though. 
		
	
		
		
		
		
			
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				- Greg 
  
90G : Light - Tek 6xT5 | Skim - EuroReef RS135 | Flow - 2xVortech MP40W | Control - Reef Keeper 2
			 
		
		
		
		
	
		
		
	
	
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