Thanks for all the advice. I hope that now that the "beastie" is gone I won't have any more problems. What would happen if I decided to just let the aiptasia multiply? 
 
Today the largest group of zoos I scraped off the rock looks really good, only a few tentacles open on the smaller colonies and the smallest 2 groups are totally closed up. 
		
	
		
		
		
		
		
	
		
		
	
	
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