It's a bloomin' success for college students

A grow light illuminates Aaron Jones as he works in an automated greenhouse that he and six of his electrical engineering technical classmates created for a third-year project class assignment at Sault College. About 30 small fish, such as guppies, are kept in about 225 litres of water. Their waste, containing nitrogen, potassium and phosphorous, is used as fertilizer for growing produce such as lettuce, tomatoes and some kinds of broccoli. Light and darkness plants are exposed to can be adjuste