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					Originally Posted by  Bryan
					 
				 
				Masonary bit, but don't use PVC but 3/8" or 1/4" acrylic rod. You won't have much success drilling live rock wth a 3/4" bit without cracking the rock, so use the smaller acrylic rod and the corresponding drill bit.  I also use hydraulic cement to cement the rocks together. 
			
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Where do you buy this acrylic rod?