Medium recycling for Nannochloropsis gaditana cultures for aquaculture

► A methodology to recirculate medium in microalgae cultures is developed. ► The most adequate sterilization method is established. ► The recirculation reduces the demand of nutrients cutting costs in the process. ► N. gaditana continuous cultures were maintained using the recirculated medium. ► The biomass biochemical composition resulted of high interest for aquaculture.