Dear Lukas Behr,

Firstly, Spirulina (Arthrospira platensis) is a filamentous and multicellular blue-green alga. Eventually, it doesn't require too much effort for harvesting.

Secondly, using chemical flocculants for harvesting microalgae is not advisable for food/pharmaceutical applications because the chemicals might have toxic effects on the final products. On the other hand, physical harvesting, for instance, vibrating net, could be promising.

Please check the video link below:

https://www.youtube.com/watch?v=jpB35pTpaMc&t=53s

Thank you

Best of luck

Chandan

https://www.chandanw2e.com/

Dear Chandan Mahata ,

thank you very much for your answer. I hope it won´t require too much effort for harvesting. I will refrain from using any chemical flocculants due to the potential toxicity.

Thank you very much for the video! I really appreciate it.

Best regards,

Lukas