I use H2Ocean in my reef tanks and really like it.  I do add magnesium to it when I mix it up - 1 cup magnesium chloride for every 10 gallons. 
 
I don't care for IO in my reef tanks, but I do it for my fish only tanks. 
 
EDIT:  You would be able to solve your high calcium value (as seen in your other thread) by switching to H2Ocean, and your alkalinity would sit a bit higher at around 8 dKH. 
		
	
		
		
		
		
			
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				~ Mindy 
 
SPS fanatic. 
			 
		
		
		
		
		
						  
				
				Last edited by Myka; 08-18-2013 at 02:59 PM.
				
				
			
		
		
	
		
		
	
	
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