All Cnidocyte's contain toxin, and all species from the order Zoanthidea belong to the class anthozoa so they have Cnidocytes.  
 
There for all corals contain toxic chemicals. 
 
As much as I empathize for murm I don't think all of this Palytoxin finger pointing is order. There are tones of things that could make you sick from the tank, palytoxin is only one of them. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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