Ok, I'm sorry if this makes me sound really stupid, but how often do I replace the coil thing and how/when do I clean the tank?
For example, I'm using cherry juice just now, but also have chocolate mint I really want to try.
I know I have 2 actual units, but my OH is going to be using the second one for now.
Do I just wash out with water? What about the coil? New coil for new flavour?
Thanks in advance :)