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			#1  
			
			
			
			
			
		 
		
		
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			 I have a rock that is covered with Zoo's that I noticed tonight seems to be expelling black droplets that seem to float away with the current. Is this normal or should I be concerned? It seems that all the zoos on this rock are doing this. 
		
	
		
		
		
		
		
	
		Marcus  | 
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			#2  
			
			
			
			
			
		 
		
		
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			 As far as i know, its ether taking a poop or expelling extra algae ( i forget what its called but its the algae that grows inside zoos which make them photosythetic).  I've had a colony do this before and nothing ill happened to them so i thought nothing of it. 
		
	
		
		
		
		
		
	
		Had you ever fed them or is there anything small enough that you've fed that thye might be eating?  | 
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			#3  
			
			
			
			
			
		 
		
		
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			 Just feeding the tank DT's. Looks really weird almost like oil drops that come out of the mouth. 
		
	
		
		
		
		
		
	
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			#4  
			
			
			
			
			
		 
		
		
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			 Wouldn't happen to have a digital camera handy so we can see exactly what it is you're talking about? Remote diagnosis is difficult without a pic but I would vote for it taking a coral cr@p. Corals usually only expel their symbiotic algae when under extreme stress. 
		
	
		
		
		
		
		
	
		JMO, Anthony  | 
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			#5  
			
			
			
			
			
		 
		
		
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			#6  
			
			
			
			
			
		 
		
		
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			 ITS NORMAL . . .  eventually you'll see other corals do the same thing . . . its just a way for them to poop   
		
	
		
		
		
		
			
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