I appreciate the advice.  I had been relying on water changes to keep things in check and everything was fine.  But I discovered that IO salt was only giving me a mag level of 1250 and calc of 380.  My goal for this tank is a clam and some sps so I was hoping to bring it up to a safer level. 
 
Maybe I should just look at switching salt brands. 
		
	
		
		
		
		
		
	
		
		
	
	
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