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			 Ok so I have this piece of live rock, and this hole in it, about the size of an eraser on the back of a pencil.  
		
	
		
		
		
		
		
	
		
		
	
	
	And it shots out this silk white like web stings, and they attach to near by corals. (and drives me crazy I don’t like the stuff – should I plug the hole?) Is it good or bad? Do you guys know what I’m talking about, if not I will post a photo.  | 
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			#2  
			
			
			
			
			
		 
		
		
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			 Odds are pretty good we're talking about a vermetid snail (stationary). Look for a tubeworm like growth on the rock near to where the web comes from. Try a search on "vermetid" and see how it compares. 
		
	
		
		
		
		
			They'll spread like mad in a tank (you think "one" of them drives you crazy ... 
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	-- Tony My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!  | 
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			#3  
			
			
			
			
			
		 
		
		
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			 Heres an article from Reefkeeping about vermetid. 
		
	
		
		
		
		
			http://www.reefkeeping.com/issues/2005-01/rs/index.php 
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	"We shall dive down through black abysses... and in that lair of the Deep Ones we shall dwell amidst wonder and glory forever." - H.P. Lovecraft Old 120gal Tank Journal New 225gal Tank Journal May 2010 TOTM The 10th Annual Prince George Reef Tank Tour  | 
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			#4  
			
			
			
			
			
		 
		
		
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			 hey you guys are right,  
		
	
		
		
		
		
		
	
		
		
	
	
	thanks for the article also. I think I will try and kill them before they spread,  |