Hello. First post here...looking for some advise. I've been using a Nautilus Mini on an Aspire CFVV+ battery for a while now. I keep the battery at 4.2V and the airflow on the 2nd largest setting, and I vape 18mg of nicotine. I ordered an Eleaf istick 30w this weekend, mostly for the convenience of the longer-lasting battery and the variable wattage. While researching the istick, I came across the Melo sub ohm tank. It had decent reviews, and I figured for $20 I might as well try a sub ohm tank (it uses 0.5 ohm coils similar to the Aspire Atlantis). I've read that you should use a lower nicotine level with a sub ohm coil. I do mostly mouth-to-lung hits (I can do throat hits with my current setup, but I find it harsh). I'm not looking for huge clouds, just a nice flavorful vape. My question is, what nicotine level should I use for mouth-to-lung hits on the Melo that will be comparable to 18mg on my current setup. I mix my own juice, so I can make any nicotine level I want (not just stuck to common vape store levels). I was going to mix up some 18mg for my Nautilus tomorrow, so I can make some lower nicotine juice for the Melo at the same time.