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 Zoo question 
		
		
		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  | 
		
 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?  | 
		
 Just feeding the tank DT's. Looks really weird almost like oil drops that come out of the mouth. 
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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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 ITS NORMAL . . .  eventually you'll see other corals do the same thing . . . its just a way for them to poop  :biggrin: besides . . . the things corals eat has to come out somewhere  :mrgreen: 
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