Hey ummm thanks guys, I'm setting up a new tank and I think I'm convinced. I'm going to have shallow sand in the main and DSB in the sump/ref. Sorry that is now a bugger for you to make any changes . ..  But I appreciate your experience :-) 
		
	
		
		
		
		
			
				__________________ 
				----------------------- 
-Wilty
			 
		
		
		
		
	
		
		
	
	
	 |