As I'm nearing the end of my first full day with my VK I am starting to wonder how I'll know when the carto is empty. I have noticed a decrease in "hissing" and the flavor is starting to change slightly, so I suspect it's getting close. 
What are the signs that it's done?
	
		
			
		
		
	
			
			What are the signs that it's done?
 
				
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		