How long does a mini diving tank last?

A mini tank lasts between 3 and 40 minutes on the surface: around 3 minutes for the 0.2 L aluminum model, 20 minutes for the 2 L model, and up to 40 minutes for the 2 L carbon/300 bar version. 

At a depth of 10 m, divide these times by two; at 20 m, divide them by three, as air consumption increases with ambient pressure.

Mini scuba tank MiniDive

• 0.2 L aluminum: “up to 3 minutes”
• 0.5 L aluminum: “5 to 10 minutes”
• 0.5 L carbon: “5 to 10 minutes”
• 1 L carbon: “approximately 20 minutes”

To achieve these values, breathe slowly, stay shallow, and maintain your regulator to avoid micro-leaks.