I wouldn't stress out too much about the ammonia from a dead clownfish in a 50gallon. 
just watch for a spike in ammonia....but I would be surprised if you notice anything. 
		
	
		
		
		
		
			
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				Way too much time and money has gone into this hobby....and yet, I CAN'T STOP
			 
		
		
		
		
	
		
		
	
	
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