I would also add that dosing all food with Garlic and Selcon keeps ich at bay for me.  When I made my switch over to my new tank I added a yellow tang, probably too soon and within a day it had black ich.  Uped the Selcon and Garlic and it disappeared in about two days and did not return.  I then got brave and added a Copper Banded Butterfly.  This time traditional white Ich struck him and my regal tang.  Stayed up with the Selcon and Garlic and all are doing fine. 
 
-Joe 
		
	
		
		
		
		
			
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				210 Gallon slowly gaining population. 
 
Foxface, Naso, Coral Beauty, 2 Clowns, 2 Chromis, Orange Anthias, and Striped Goby.
			 
		
		
		
		
	
		
		
	
	
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