I think you would actually end up with a decent number of polyps if they  encircle a one-inch-long cylinder with that diameter - I know I learned a formula for surface area one time...   
They would probably grow faster too because there would be circulation from all directions - like zoos growing on old acro skelletons! 
I don't know if I'm the only one, but I hate frags mounted on agrocrete plugs!  They look good but it is a bugger to take frags off of the plug because of all the crushed shells - pretty tough to cut through with a razor blade.  JME. 
 
- Chad 
		
	
		
		
		
		
			
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				Returning to the hobby after an eight year absence.
			 
		
		
		
		
	
		
		
	
	
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