NOVELTY - Algal oil production includes control growing to provide intensive growth to supply starting mechanism for algae farming; farming algae using primarily sunlight; and processing algae, where at least one of the steps includes the use of a bag able to be interconnected to gas or liquid flows of water, carbon dioxide, oxygen, and/or air.    USE - Method for producing algal oil useful for biodiesel production (claimed).    ADVANTAGE - The method improves the growth and conversion of algal growth for obtaining natural oils to be used as biofuels; and uses excess CO2, thus improves carbon footprint of industry.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a phyto bag for enhancing growth of algae for harvesting to form biofuels including a bag made from a flexible sheet material enabling ready construction of large quantities, where bag includes a clear transparent top film to allow the passage of light to the algae in the bag; and a metallic reflective bottom film to reflect light back to the algae in the bag, where the bag has a large footprint relative to its height and the clear transparent top film and the metallic reflective bottom film improve sunlight and heat transfer to algae material in the bag to enhance growth; (2) a solar bag for use with a phyto bag having enclosed air cavity for providing insulation and having peripheral weights to allow ready location over the phyto bag, including upper and lower translucent surfaces for allowing ready transfer of sunlight to the phyto bag; and light filter; (3) a system for enhancing growth of algae for harvesting to form biofuels including a phyto bag; a sunlight controller on or above the top surface of the phyto bag; and a heat aiding mechanism on or below the bottom surface of the phyto bag, where the control of sunlight controller and the heat aiding mechanism ensures heat control within the phyto bag to ensure heat in a predefined range; and (4) a method of algae growth including providing phyto bag(s) having ratio of footprint to the height of greater than 30:1; providing a heat control system for controlling the temperature at 20-25 degrees C; providing sunlight enhancement to the contents by the bag being constructed of material including translucent and reflective materials; providing input of carbon dioxide (CO2) at the required rate; and providing flow of saltwater with salinity similar to seawater, where upon inclusion of algal material, from the family of Nannochloropsis, an improved algae growth occurs.    DESCRIPTION OF DRAWING(S) - The drawing is a diagrammatic view of algae farming system.