Photobioreactor (PBR) is the environment where Algae live, gasses are scored and chemical-sensors test atmospherical changes. We used recycle and local materials for building this prototype.
Therefore, we had visited many pet supplies, hardware stores, chemist's, plastic shops.
And, we used "solid waste" (water bottles) around us.
Finally, we had been built PBR structure using glue, and silicone.