The creatures under the liverock
			 
			 
			
		
		
		
		They came in on your LR most likely and clean up detrius. Wastes and such. If a snail dies or something else these guys will clean the mess up before it can turn into ammonia. Throw a piece of clam or scallop in your tank after lights out. then watch the worms appear.  [img]smile.gif[/img] 
		
	
		
		
		
		
		
	
		
		
	
	
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