You know, I read about this particular issue somewhere.  On my powerhead controller, when I pull that cord out, there’s always a little spark, which is a bit scary.  
 
That’s my next upgrade - buying better powerheads.  Can’t avoid the fact that you have to spend a bit more for peace of mind. 
		
	
		
		
		
		
			
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				     Maggie
			  
		
		
		
		
	
		
		
	
	
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