Yes, you can replace it and change it with other 810 drip tips.
Unscrew base hardware; Detach the fixed ring from the tank; Change the used glass tube; Screw the fixed ring and the base hardware back. Note: The picture below is for the standard tank only.
Twist the top cap anticlockwise; Remove the top cap; Add your preferred e-liquid into the tank through the filling hole; Twist the top cap clockwise firmly.
Yes, it is compatible with Odan and Odan mini tanks.
Standard version: 4.5 ml; TPD version: 2 ml.