GFI - all created equal?
			 
			 
			
		
		
		
		I was at my local Home Depot today and was looking at some of the GFI outlets they had.  They had ones ranging from $11 to $20.  Now my question is, are they all basically the same?  Is there anything in particular I should look out for in a GFI (i.e. rated 15A or rated 20A, etc). 
 
I also noticed some have an indicator light on them.  Do you find the indicator lights on these outlets useful or should I just save the $2 and get the plain old one?  Also, are these outlets easy to install?  The only wiring I've done is to hook up my ballast and lights. 
 
Thanks. 
		
	
		
		
		
		
			
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				32"x32"x20" Cube-ish tank
			 
		
		
		
		
	
		
		
	
	
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