Abstract: The present disclosure provides a photobioreactor system designed for optimal algae productivity at large volumes in order to deliver a high yield per acre. The photobioreactor system comprises photobioreactor units, that may be isolated from each other to reduce culture clashes; an array of diffused acrylic rods attached to the bottom of a removable acrylic circular top in each photobioreactor unit that provides more light into the photobioreactors; a double parabolic trough mirror system, which utilizes two parabolic trough mirrors to reflect and concentrate sunlight into fiber optic cables; and an algae-cycling system mounted at the bottom of each photobioreactor unit and driven by air to circulate the algae suspension in a vertical motion.