Iron dosing?
			 
			 
			
		
		
		
		All of my green corals have lost their green i understand that a lack of iron can cause this.  Should there not be enough iron in my salt when i do my weekly water change.  I have alot of chaeto and caulerpa in my sump could they possibly suck all the iron out?  Its the only change i can think of in my tank. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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