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			#17  
			
			
			
			
			
		 
		
		
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			 I dose Ca and Alk(sodium carbonate) every ½ hour. It helps keeping it up, but not much about day-night swings. 
		
	
		
		
		
		
		
	
		
		
	
	
	My main bioload are the corals (SPS). I have some fish, mainly utility fish. This shows once again that every tank is different.  | 
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