change out the stock bulbs and I don't think you'll have a promlem growing SPS...I've got an undata doing great under just 4 bulbs, but it is near the tope 1/3rd of the tank and I changed out one bulb for now, will be changing out the other three when I get back down there. 
		
	
		
		
		
		
			
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				75 gallon with 20 gallon sump in the works. 
R. Bacchiega.  Tattooer 
I didn't smack you, I simply High Fived your face. 
I've got so much glue on my pants it looks like a Friday night gone horribly wrong.
			 
		
		
		
		
	
		
		
	
	
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