So i upgraded this morning to a Arctic tank .2ohm from an atlantis .5ohm , using an IStick 50W. Don't do it, after about I'd say 2 hours, the IStick started flipping out. Shutting off for no reason, reading way off the ohmage, saying there was no atomizer. From what i can gather, being an IT guy, is that the .2, which is the bottom line for the IStick, is not really what it can handle. I will switch back to the .5 atlantis and see what happens the rest of the day, and report back. This is more about the box then the tank. I did notice that the base of the arctic was getting pretty hot, i was running about 30 to 35 watts.