Ke ʻoi aku ka nui o ka methane i ka paepae pahū luna a i ʻole ka hāʻule ʻana ma lalo o ka palena haʻahaʻa, He mālie ka puhi ʻana ma muli o ka nele o ka methane a i ʻole ka oxygen. I loko o ka laulā pahū, akā naʻe, ʻoi aku ka maikaʻi o ka ratio methane-to-oxygen no ka puhi ʻana, he ahi wela.
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