The biggest issue I have with these polyps is that they trap tons of detris, crowd out zoas, prevent SPS from encrusting, etc... 
  
 
I had the really nice blue ones too, and when you cleared a spot, 10 more would spring up somewhere else - plus eventually they'd grow back. 
  
 
Max. 
		
	
		
		
		
		
		
	
		
		
	
	
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