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 How to Refill Your Vape Tank or Pod FDA reverses order taking Juul vaping products off the market in US, opens door to possible authorization ABC News What is a Juul? It's a trend parents need to know about Packaging change? : r juul E cigarette giant Juul quits selling fruit flavored vape pods to stores Los Angeles Times