STOP!!!! To my knowledge Smok does not make an Ni200 coil! All standard Smok coils are kanthal, not Ti, SS or Ni. Standard Kanthal coils SHOULD NOT BE USED IN TC MODE!! Kanthal coils will fire in ss or ti tc mode, but it is not safe to use them in tc. The only way to get Ni, SS, or Ti for a Smok tank is to get the RBA deck and build your own. So unless you have the RBA and the proper coils made up stick with wattage mode.