@steve pearson Hello and Welcome to the forums!!!! Depending on the coil you are using, would decide which nic level you should use. Lower ohms means lower nic mostly all the time. I run 24 mg on a 1.5 ohm or higher as it does not atomize as good as lower ohm. When using Sub ohm coils, most prefer 6 mg or lower. Everyone is different as far as what helps them stay off the stinkies. I can only offer you what worked for me. It took me Unflavored juice 24 mg on a little 1.8 ohm coil @ 7-9 .5 watts in the Emow tank. I did dual use for 3 and a half months before going exclusively to vaping. Hope this helps. Any other questions do not hesitate to ask as many here are willing to help out when ever possible.