![]()  | 
	
| 
		 
			 
			#1  
			
			
			
			
			
		 
		
		
	 | 
|||||
		
		
  | 
|||||
| 
	
	
		
			
			 I don't know where else to post this so I put it here. 
		
	
		
		
		
		
			The question is I have a couple of ballasts and lights which I think are HO. How can I tell? Here is the number off the lights F72T12/D/HO 85 WATTS ALTO COLLECTION BY PHILIPS.The bulbs are 6' long. Thanks in advance for the help. 
				__________________ 
		
		
		
		
	
		
		
	
	
	Marty 50g reef, bubble king skimmer,20g sump,zeovit system, PM cal reactor  | 
| Thread Tools | |
| Display Modes | |
		
  | 
	
		
  |