Seaweed with added nutrition (IMAGE) University of Gothenburg Caption A certain amount of process water with a controlled content of nitrogen was added to the seaweed cultivation. The result showed that the seaweed grew more up to 60 per cent faster, and the protein content quadrupled with the addition of process water. Credit Kristoffer Stedt. Usage Restrictions Photocred always License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.