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			#1  
			
			
			
			
			
		 
		
		
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			 Mark, I've been having the same problems lately. Same scenario as you're having. Coral is doing fine and then starts to accumulate algae on the tips. The weird thing though is that corals right beside it are fine; which leads me to believe that it is not a flow or lighting problem. Very confusing. 
		
	
		
		
		
		
			
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	225g reef  | 
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			#2  
			
			
			
			
			
		 
		
		
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			 Are you dosing 2 part (or kalk) as your calcium/alk supplement? If so is it possible that the acros that are getting tip burn are in direct contact with the alk (or kalk) before it gets dispersed by the flow? 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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			#3  
			
			
			
			
			
		 
		
		
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			 Marie...I think you might have hit the nail on the head!!!! 
		
	
		
		
		
		
			I have been dosing c-balance for the past 6 months and I put the additives in near the acros that are being affected because of the great flow there. The same acros were doing great before but not growing as much. When I started the additives, I saw growth increase because my numbers got to where they needed to be.... See, I knew I should have asked this on here ages ago. Hopefully your suggestion helps me out. 
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	Mark... ![]() 290g Peninsula Display, 425g total volume. Setup Jan 2013.  | 
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			#4  
			
			
			
			
			
		 
		
		
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			 I'll keep my fingers crossed  
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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