An airless sprayer for paint or the like consists of an electric drive unit connected to a piston. The platform includes a supporting tray comprising channels, each having a nutrient-film, and a plant carrier positioned on the supporting tray, where the plant carrier lies in a plane when positioned on the supporting tray and is removable in a direction that lies in the plane without removing the supporting tray from the pod. Therefore, an adjustable expandable installment which is provided with multi-purposes and is able to quickly and freely ascend, descend or expand is provided. The high voltage power supply is disabled from energizing the accelerator column in the low energy mode.