Here's the carto/tank. Tube Tank
The tank is filled with your juice (3ml or 5ml) , the carto inside the tank absorbs the liquid and lets you vape for hours at a time before having to refill.
Here's the cartos that slide into the tank...note the little hole punched in the carto...that's how the liquid gets into the carto from the tank: Tube Tank - Refill Cartomizer
Here's a video showing how to fill the tank: Lavatube eCig Tube Tank Filling How to fill basics of Lavatube tubetank filling - YouTube
I just want to add: If you get the Volcano tank with the flanged cartos, make sure the flanged end is on the correct end of the tank...there IS a difference. On one end of the tank there's an indentation for the carto flange. The flange fits in that indentation to stop it from spinning on the carto. When seated correctly, you can easily screw the tank onto the Lava Tube without it spinning around on you.
Hope this helps! Best of luck to you!
on edit: Be SURE to prefill your carto with juice before putting it in your tank. That facilitates the wicking action while in the tank Also, after you fill the carto with juice (slowly drop liquid until it drips from the threaded end of the carto AVOIDING the center hole..drip down the side of the stainless steel wall), and put it on the Lava Tube, put your finger over the battery end hole and take some puffs to get the flow going into the carto from the tank. Then screw it on your Lava Tube. It usually takes a tankful to get a really good flow going into the carto, but once it does...it's a fantastic vape.
2nd edit: Here's my favorite review of the Lava Tube: http://www.youtube.com/watch?v=_SqGT0XPMv8
If your wife is getting one, the red is a really pretty color! This video explains everything you need to know about how to use/operate the Lava Tube and SteelJan is fun to watch. She's a GREAT reviewer of ecigs.
Also, on the cartos above: make sure you get the 3.0 ohms so you can take the voltage of the Lava Tube up to 6 volts IF you want to. That makes the LT more versatile. Lower ohm cartos would not let you go that high to vape. Personally, I find 4.2v-4.5v high enough for me, but you may like 5v or higher and the 3.0 ohm carto lets you go that high.
Make sure you pick up some Drip Tips. You'll want "510" drip tips that will fit in the carto.
Last edited: