I also experienced the same issue when i jacked my whites up to increase growth of coral (it did that but also spurred algae growth as well).  In the short term i found that lowering white channel helped a ton until i got my phos under control then slowly raised the white channel back to high. 
		
	
		
		
		
		
			
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				Nick
			 
		
		
		
		
	
		
		
	
	
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