Bubble Bummer! Let's first make sure your carbonating bottle is compatible with your DUO. The DUO Sparkling Water Maker can be used with our dishwasher-safe 1L glass carafe and our regular 1L Fuse bottle. The 1L classic bottle, the 0.7L glass carafe (from the Crystal), the 0.5L bottle and My Only Bottle (0.5L) are not compatible.
- If you haven't added flavor, try carbonating with one or two extra pumps by pushing down firmly on the carbonating button for around two seconds. Release and repeat. Do not carbonate if flavours were added.
- After pressing the carbonating button a few times, check if you see bubbles. If you don’t, you may be out of gas.