Yeah I've heard the tanks use a lot of juice. I also recommend next time you order stuff, buy some Boge cartomizers too and learn to use them. That way, if you ever have atomizer problems you will have a backup way to vape. And cartomizers like boge (metal ones) are best for cinnamons (can damage plastic) as well as any clingy flavors that are hard to get out of atomizers (including cinnamon).