It's your KH that scares me, that is so very low.  I would use a buffer to bring that up, allthough a quick change up will take a hit on your low Ca. 
		
	
		
		
		
		
			
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				- Greg 
  
90G : Light - Tek 6xT5 | Skim - EuroReef RS135 | Flow - 2xVortech MP40W | Control - Reef Keeper 2
			 
		
		
		
		
	
		
		
	
	
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