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			 you can make a needle wheel to fit the pump impeller.  Some pumps are better suited than others for modification.  Having the venturi on the pump's intake is a lot more efficient than placing the same on the output side.  The main advantage of a euroreef needle wheel and DIY versions is its quietness and more uniform bubble size. 
		
	
		
		
		
		
		
	
		
		
	
	
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