A booster box for a standalone feed system. The booster box includes a pump having a pump inlet and a pump outlet. The pump inlet receives a source fluid from a source container when the pump is activated. The booster box includes a manifold block with a manifold inlet in fluid communication with the pump outlet. The booster box includes a digital controller configured to automatically activate the pump when a pressure within the manifold block sensed by a pressure sensor is below a minimum pressure, and automatically deactivate the pump when the pressure within the manifold block sensed reaches a target pressure. The digital controller is configured to deactivate the pump assembly when a predetermined maximum pumping time period elapses before the target pressure is reached.