That device is really cool, if I could find one like that it could definately replace my non-bubbler machine device.

One thing that I bet would help: (if you aren't aleady) hold the pipe upside-down so the mesh is facing down. If the mesh is like every other mesh I've used then there will be absolutely no leakage/runoff and you should be able to use a regular lighter or a torch lights, whatever is around.

What you might be able to do is put a cork in the hole with a small hole in the middle so you can hold it to really toke then release to clear (if that wasn't already mentioned)