But do you QT your corals now? 
It just seems pointless to buy rock specifically for the pest free aspect and not QT. Especially because there is always a chance of infection of invasion from any frag or coral colony. I agree a giant eunicid worm would be one of the worst things to get in your tank. But is this another creature that can easily come in on a colony or frag and destroy your tank all the same? 
		
	
		
		
		
		
		
	
		
		
	
	
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