Thank you for answering I tried resetting the coil head and it still read the same 0.69oms but on wattage its reading 0.64oms I have even reset the atomizer and still get that reading so should I replace the tank or get a different tank just curious if ther is something wrong with the mod but I dont think there is because I put the ariganle tank on it and it did fine any suggestions on tanks a coils I should use other then the ego one mega