5 months or so on my D120's and loving them too.  Will be modding them for 0-10v control soon.  Wanted to make sure there working well before I open them up.  And 2 over my 60" tank is ok, but not enough if you have SPS etc.  I'm a softie tank 
		
	
		
		
		
		
			
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				Dan Pesonen 
 
 
Umm,  a tank or 5
			 
		
		
		
		
	
		
		
	
	
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