Hi im new to this and got my device two days ago. Im using the extra coil that came with the kit i think its the 0.5. my device is always set to 30w on 0.5ohm and 3.4 volts. At times the tank gets really hot. My liquids are 0ml nicotine. Can anybody tell me if theres anything to worry about with the tank area getting hot. Ive got the melo 3 tank.