So, i purchased 2 mini vivi novas (for just in case purposes).
And yesterday, i got 2 different flavors. As of now, i only have one of my vivi novas filled, but i'm wondering if i fill the other tank, whether it will leak or if it's okay to keep one tank full (not on a battery) so i can use 2 different flavors whenever i want.
thank you for all your help!