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			 I have 2 of the speedwave brand (most of the pumps are identical) operating as a closed loop outside of the water for about a year.  No leaks.  Fairly quiet.  I do have them wired into an arduino controller ramping them up and down. 
		
	
		
		
		
		
		
	
		
		
	
	
	I have gone through a few powersupplies (replaced under warranty). Keep them cool and they are fine.  |