I couldn't get the head unscrewed from my tank (not even with pliers), so I picked up an old tank from my messy TV table. I filled it with fruity hoops, but there was a certain amount of the old liquid in it, Mount Baker Vapor's Butternut Squash. I still really like that flavor. But over time, it gets very dark and I guess it messes up the coil. But it's a really good, true to flavor juice.