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			#1  
			
			
			
			
			
		 
		
		
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			 I got a 60g 36x16x24 with 60% sps (mostly montiporas) and 40% lps, i was wondering what would be the best for the tank: 
		
	
		
		
		
		
			2x 175w xm 20k or 2x 250w xm 20k? The hood is the same price for both! Thanks for your advice! -Jake 
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	45g Shallow Reef | Deltec 600ix | Illumagic Blaze-X 90 + 2 Vitamini Super Actinic | 30 lbs LR | 3x 6055  | 
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			#2  
			
			
			
			
			
		 
		
		
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			 If I read your question right, your tank is 24" deep...then the lights should be the 250W as 175 may not give you good coverage all the way to the bottom. 
		
	
		
		
		
		
			
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	Mark... ![]() 290g Peninsula Display, 425g total volume. Setup Jan 2013.  | 
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			#3  
			
			
			
			
			
		 
		
		
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			 Go with the dual 175W MHs and use either the Iwasaki 15K bulb if on an electronic ballast or the AB 13K bulb if using a magnetic ballast.  Put your SPS up top and the LPS down low. 
		
	
		
		
		
		
		
	
		
		
	
	
	Both the respective setups will provide as much if not more PAR/PPFD than an 250W XM 20k bulb. AB 175W 13K: http://www.reeflightinginfo.arvixe.c...&Submit=Search Iwasaki 175W 15k: http://www.reeflightinginfo.arvixe.c...&Submit=Search XM 250W 20k: http://www.reeflightinginfo.arvixe.c...&Submit=Search  | 
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