Does anyone know how often one should replace a pod w a vape like this? The liquid has turned a darker color is that normal? Just curious. : r Vaping F.D.A. Delays Decision on Juul's E Cigarettes but Orders Others Off the Market The New York Times How to Refill a JUUL Pod Vape Shack FDA Bans Juul From Selling E Cigarettes in U.S. WSJ How to Refill Vape Pods: The Juul, Cync, MyBlu and Gusto