Lighting  for sps corals
			 
			 
			
		
		
		
		Would just like to get a few opinions on what lighting to use on a 90g tank, 48" long x 24" high x 18" wide, which will be housing sps corals and clams. Also, what type of ballasts are advised, electronic or not, and why? Thanks. 
		
	
		
		
		
		
		
	
		
		
	
	
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