I find that as long as I keep food in the tank, the damage is minimized. It's only one that picks, and only on a couple pieces, so I'll tolerate it. But I feed nori before work, auto feeder dumping pellets every 90 minutes until I get home, then more nori, and mysis after dinner.  
My wild zoas are gone, same with palys. They eat some algae too, so that's a good thing ) Overall, they're an amazing pair of fish and I'll deal with the nipping. Just have to increase the coral growth a bit to keep up -lol 
		
	
		
		
		
		
			
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				Brad
			 
		
		
		
		
	
		
		
	
	
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