Both piles at either end of my tank actually had rocks higher up when I first scaped but I quicky realized that viewing corals so high wasn't as interesting to me so I lowered both ends and am much happier with it.  There is more opportunity to look down at corals and fish have more room to cruise the reef top I find. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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