What hinges them together?  I assumed it was a muscle of some sort and that it was eaten.  Will it grow back? 
 
Oh, my tank during really hot days was hitting 29.9 C with the fan on.  Over the last month or 2, I would see 28-29C regularly during the day and 27C in the morning.  Not too bad. 
		
	
		
		
		
		
		
	
		
		
	
	
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