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			 OK I have 2 400watt radiums on 2 m59 ballasts.  I am going to upgrade the ballasts, they will either be a pulse start ballast or the HQI ballast.  So my question is is it worth the extra $130 dollars to get the HQI ballast(Intensity wise)?  Also if in the future I decide to switch bulbs to say Ushio's(sp.) will both ballasts run that bulb correctly? 
		
	
		
		
		
		
		
	
		
		
	
	
	Thanx Trevor  | 
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			#2  
			
			
			
			
			
		 
		
		
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			 Trevor, the difference in ballasts is slight. Also, the FPO HQI ballasts are just Son Agros in fancy cases. Cost me $89 a piece on Quadra. They will run Ushio 10k, but will shorten the bulb life (on all bulbs) 
		
	
		
		
		
		
			
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	Brad  | 
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			#3  
			
			
			
			
			
		 
		
		
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			 so do you think I should go with the pulse? 
		
	
		
		
		
		
		
	
		
		
	
	
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			#4  
			
			
			
			
			
		 
		
		
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			 you only need pulse if the M59s won't fire the bulbs. Sounds like your's are fine. I have a radium running on a M59 between 2 on HQI, and I can't tell the difference. 
		
	
		
		
		
		
			
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	Brad  | 
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			#5  
			
			
			
			
			
		 
		
		
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			 Great thanx Brad, with the ballasts I have now only one of them fires the bulb the other one just won't.  So to J and L I will order. 
		
	
		
		
		
		
		
	
		
		
	
	
	Thanx again Trevor  | 
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			#6  
			
			
			
			
			
		 
		
		
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			 Trevor, try ordering one thru Tridon hydroponics. 89 bucks plus about 20 for a box. 
		
	
		
		
		
		
			
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	Brad  | 
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