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			#1  
			
			
			
			
			
		 
		
		
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			 Over the last few days I have been noticing some of my LR is getting white spots on them more like the coraline algea is falling off or chewed off I have not seen this before. anyone have idea or heard of this before? 
		
	
		
		
		
		
			
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	only 25 gal & (6 bulb, t5's fixture & 30 gal sump with small fuge  | 
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			#2  
			
			
			
			
			
		 
		
		
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			 maybe its bleaching,  
		
	
		
		
		
		
		
	
		
		
	
	
	most of my liverock bleached when i first set it up, but then after a few months all the coraline came back  | 
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			#3  
			
			
			
			
			
		 
		
		
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			 Do you have an urchin? 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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			#4  
			
			
			
			
			
		 
		
		
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			 yes to an urchin a small one but it has never eaten pieces like that . 
		
	
		
		
		
		
			
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	only 25 gal & (6 bulb, t5's fixture & 30 gal sump with small fuge  | 
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			#5  
			
			
			
			
			
		 
		
		
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			 Usually white in coraline algae is an indication of growth or death. Any abrupt changes in tank chemistry that might of caused it? Other than than that the only thing I could attribute it too would have to be your urchin, they are known for it after all. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
	Levi  | 
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