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					Originally Posted by Chin_Lee
					
				 
				Actually most 250W MH are employed over 2 feet and usually a maximum of 3 feet. Anything over 3 feet you will experience a distinct spotlighting effect. 
			
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Agreed.
Anyway, Grim_Reefer has stated that the PAR outputs between the 39 and 54 watt bulbs should be VERY similar.