With the aquascaping that I have done in my cube.... my 4 tangs never have to turn around like they do in a narrow longer tank..... They can just swim around the towers and continue along thier way.... I really think that the longer tank is better thing is not always true. 
		
	
		
		
		
		
			
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				Cheers 
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210g Mixed Reef
			 
		
		
		
		
	
		
		
	
	
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