The reading of this thread is more time spent than on my reef haha. I vote just do nothing and nap all day. Mg levels?  I think mine were at about 1200 three years ago, but I have no idea now. In terms of Ca and Alk?  I have no clue what my levels are at. The only parameter I know/check is my salinity once every three weeks when I do my water change. Just kick back and enjoy your tank (as long as it looks good). 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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