I really liked that middle tower but another swim-thru is also nice to have.  
 
You've got a nice slope on the right for mounting coral too... personally I'd remove that little vertical nub you added to the end there as it will block a lot of coral from view when looking in the tank's end maybe... 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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