However, they're running into problems of their own: need for large volumes of water, difficult in scaling up the process from the lab to the field, and the high volume of carbon dioxide consumption that these algae have. Some of the problems were unexpected, however:
"Shrimp think algae are good food," says CEO Pyle [of the company Sapphire Energy]. "If you don't pay attention, you will ultimately have a shrimp farm."The returns on such an investment might not be too bad either!