(the gas just bubbles up through the water, and gets unpredictable, like the fire dances from gas bubble to gas bubble, or a cloud of gas forms and then suddenly ignights when it gets big enough to reach a part that was burning the whole time.)

Thanks for the replies, by the way, that helped wink

-Mich
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DS1: Hon, you already finished your homework
DS2: Quit it with the protesting already!