Came back and realized I didn't fully answer your question. With a tank like this, what you need is a punched carto and the tank. I have Bella tanks, which are the same as Lava tanks. These are the easiest to fill that I've found so far. When you are needing to refill the tank, you just pop the top off and refill, then pop the top back on. Much easier than other carto tanks. The only con
that I've read about is finding the right juice consistancy with the number of holes in the carto. I use 70/30 mixed juices along with a Boge one hole punched carto and I've never had any issues. If you use more VG, you might need another hole. It's just something you have to 'fiddle' with until you find what works for you, and then you're golden.