Day 15 update:  I added a hang on tank UV sterilizer, I am still running the magnum micron filter changing filter every few days.  I am also adding phosphates and nitrates to keep these numbers so they register.  My tank had very low phosphates and un-measureable nitrates which likely added to the problem. 
 
So far things look good, corals are growing again, polyps extending. 
 
Keeping fingers crossed. 
		
	
		
		
		
		
		
	
		
		
	
	
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