Due to their capability to utilize CO₂ and convert it into O₂ (photosynthesis) they are very interesting for biotechnological purposes. Therefore, those Cyanobacteria need to be cultivated and sometimes immobilized. Let’s accompany Lenny Yap to the Cyano-laboratories at the Institute of Molecular Biotechnology at the Graz University of Technology. Let’s see the impressive light conditions that ensure that Cyanobacteria grow optimally.