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			 Hey All, 
		
	
		
		
		
		
		
	
		
		
	
	
	I'm just about ready to put up two 250W MH's over a 72 gal tank. Any suggestions as to how high above the top of the tank. Is there an ideal height? It is built into a wall, so I have about 2 feet above the top of the tank to play with. Can I leave the glass tops on to cut down on evaporation, or do I need to remove them? Any suggestions would be aprreciated. Cheers, Al  | 
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