 Microalgae and high-rate algal ponds, HRAP, can convert nutrients from wastewater into biomass and bioproducts, improving sustainability of wastewater treatment. Temperature and photoperiod significantly affect biomass productivity and water treatment efficiency in wraps, with temperatures between 15 and 25 degrees Celsius resulting in high removal rates of nitrogen and phosphorus from municipal wastewater. This article was authored by Liliana Delgadillo-Mercas, Filippa Lopez, Behnam Tidy and others.