In-pond propane fire feature?
I'm a mechanical engineer and want to add a very unique flare to my back patio. I was trying to decide between a pond and a propane fire feature (in a rock bed) when I was struck by an idea...could I put a propane burner of some sort under the water in a pond and so the gas would surface and produce a flame? I know I've seen it on a large scale (Disneyland), but does anyone know of this being done in residential application? I realize lighting the fire may be a trick. Perhaps an electronic igniter just above the surface? Flow would probably have to be enough to keep a continuous stream of gas through the water or I expect the fire would go out between bubbles. Input or other fun ideas?
If it's been done, you can do it. My suspicion is that Disney has a small pipe going from an exterior propane tank through the water and stopping at the surface, perhaps even sticking out a few inches. The public can't see it, but it has to be there.