Bubble Bummer! Let's get this figured out :)
To carbonate using the Crystal, press the carbonating button with short, firm presses until you hear a buzz (release the button between presses). Three buzzes will produce a standard fizz; additional presses will produce a stronger drink. Never press more than 5 times or your bottle will runneth over! If your sparkling water still isn’t fizzy enough, you may need to replace your carbonating cylinder.
Check out the guide below for assistance.