What are your other parameters?  What is your maintenance schedule?  What is your temperature normally at?  I would only consider 83 alarmingly high if your temp averages something much lower like 75-78.  A lot of people will keep their tanks higher (79-82) so for them 83 wouldn't be an issue.  So if your tank is not used to the higher temps and you get a temp spike then yes, it could be an issue. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
	 |