A fluid pump includes a motor, an inner gear rotor and an outer gear rotor. In the present invention, even when the number of the buttons is increased, it is possible to achieve enough engaging area and sufficient button size for each button so that each button can function effectively and not be too small for the driver. The apparatus is closed by a top wall having openings through which plants can grow with their roots enclosed in inverted cup-shaped barrier structures imbedded in a growing medium.