Bubble Bummer! Let's get this figured out. Try these troubleshooting tips first: 1. Tighten the carbonating cylinder into place to verify that it is full (pro-tip: you can use a kitchen scale to weigh your cylinder, if it's under 0.76 Kg then you ran out of gas!) 2. If your sparkling water maker requires electricity, make sure it's plugged in to a working electrical socket. 3. Only use your sparkling water maker in an upright position. Still not sparkling? Get in touch with a member of our Sparkle Support Team.