Jim wrote:
How about if I run black gas pipe out to the the back end of the pond,
put on a valve there, then something like icemaker tubing into the
pond so that gas bubbles up near the center, then light it.


Does natural gas contain sulfur? If so, I seem to recall something
about Sulfur Dioxide (poison) or Hydrogen Sulfide (rotten egg smell)
being a possible byproduct when mixed with water. I'm sure some of
our chemistry experts will chime in on this one, as I've forgotten
much more about chemistry than I remember.

Jim
Zone 8a - Dallas, Texas
Pond, Veggie Filter, Pond Maintenance & Pond Tour Pics:
http://community.webshots.com/user/dallas75248

ELEMENTS OF COMBUSTION OF NATURAL GAS

1 ft3 natural gas + 10 ft3 air + flame =
8 ft3 nitrogen +1 ft3 carbon dioxide + 2 ft3 water vapor


Gas + Air = Nitrogen + Carbon Dioxide + Water Vapor

NO Sulfur

Chagoi