I don't really recall reading anything good about the Odyssea lights...in fact, if I remember correctly, I read that some of them actually caught on fire... 
 
The DE bulbs require you to use a glass shield and a decent reflector/pendant.  Without the glass shield you can cause both yourself and your inhabitants serious harm from the UV rays it emits (this applies to DE bulbs only as SE bulbs have a glass UV shield built in). 
		
	
		
		
		
		
		
	
		
		
	
	
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