I have a Green Smoke, it uses cartomizers.
They even sell empty ones so you can use your own juice.
Anyway, pop off the rubber end piece (the part w/ the hole that goes in your mouth) and using a dropper, drip the juice slowly one at a time around the sides. The GM has a little tube that goes through the middle
(sort of, maybe a bit off center), just avoid dripping juice on top of it, or the juice will just go through the tube and leak out the other end.
The GS cartomizers hold about a dozen drops of juice before the wick becomes saturated and juice leaks out!
I dont know about the other brands of cartomizers, but I assume they are about the same.
The video is pretty cool.
