Abstract: A Fluid Flow-Schedule Control System includes a flow volume regulating subsystem and a control subsystem for determining and maintaining optimal time-based scheduling of fluid flow volume to a fluid actuated host. Together, the subsystems provide a functionally independent system for easy integration with host systems of new manufacture and particularly for retrofit. Fluid flow volume to the host is sensed by and regulated by the volume regulating subsystem according to a continuously variable, schedule sequence. The schedule sequence is preferably determined by a user and.backslash.or automatically according to specific time-based flow volume levels and.backslash.or by extrapolation from known parameters. Schedule implementation is preferably achieved through control of an electrically controllable, multiple aperture valve or pump according to schedule and/or interactive data and actual volume sensing.