When I had one, I just drilled a hole and put the tube into my container and gooped/silicone the crap out of it.  Worked for years.  Today I would just by a bulkhead. 
http://www.bulkreefsupply.com/catalo...t/view/id/941/ 
		
	
		
		
		
		
			
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				So many ideas, so little money!
			 
		
		
		
		
	
		
		
	
	
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