510-T noob question

[bols2DaWall]

I'm waiting for my starter kit and was wondering , how do you know when you're getting low on juice in the tank? TIA

 

[Plumes.91]

You should be able to see it Its a clear tank!

 

[T41CK]

That to and you will be able to taste the difference, it will start to taste real dry. Just top it off as the day goes on and you will be fine.