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			#7  
			
			
			
			
			
		 
		
		
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			 Look up the thread on Herbie's silent sump system on Reef Central. 
		
	
		
		
		
		
		
	
		
		
	
	
	Put closed-cell foam padding under the sump, and underneath the return pump and the skimmer pump. Look for silent pumps such as Velocity or Eheim return pumps.  |