It depends on how much you put in. The only source of carbon for the algae to grow is the carbon that comes out of the stack gas. Importantly, we take the untreated stack gas emission. We don't just take carbon dioxide—we take the oxides of nitrogen, the sulphur, the volatile organics, and the algae eats it all.
One of the interesting things is that we talk about an oil and gas industry in Canada, and what we're actually talking about is an algae industry. I'm kind of old, so they taught me in school that it was dinosaurs, and they even showed me the pictures of oil domes with dinosaur bones and ferns. It's all algae. All the oil, coal, the natural gas—it all started out as algae, which makes a lot of sense. Algae grows, dies, ends up at the bottom. A layer of silt forms and you get an oil dome. What we're doing is short-circuiting that, and we're just doing it industrially and quickly.