enables air from the outside to be taken and added to the water circulating in the closed circuit in a programmed manner and an air vent outlet with the corresponding chimney on the body of the bioreactor with which its interior temperature will be maintained at suitable values the closed circuit makes use of the corresponding electronic control box already existing in the purpose of the main patent introducing a cpu to govern all the elements both interior and exterior of the bioreactor with the essential and main feature that the air inlet through the venturi will be discontinuous so that the growth of the microalgae will not be affected as a consequence of continuous air injection for which purpose the electric pump controlled by the cpu will produce an intermittent current of recirculation water in combination with the venturi all the elements of the bioreactor such as water inlets and outlets co2 inlet valves and fan directly connected to the corresponding cpu box by means of their respective cables other details and characteristics shall be shown throughout the description below referring to drawings attached to this report which are shown for illustrative but not limiting purposes only in a drawing of the invention below is a list of the different parts of the invention that.