Continuity Guide: Hydroponics

Hydroponics

There are several Hydroponics Units on Moonbase Alpha, growing crops that form the basis of the Alphan diet. Among the units seen:

The "Hydroponics Unit" is also mentioned in Dragon's Domain.

The corridor outside Hydroponics Experimental. Observation windows are unusual in corridors.	The end of the corridor. A sign points to the Computer Room	Another view of the corridor.
Close up of the observation window. There are lighted panels to the side, and a computer panel at the rear. The greenhouse columns (also seen in The Troubled Spirit) are visible.	This view shows the work bench and a trolley to the side. This hydroponics lab seems to have a distinct lack of plants.	A similar view. Why does this room have the capacity to be purged in chlorine?
An interior shot, showing the instruments on the workbench.	A small plant, perhaps a lettuce, grows in soil in the column (in fact there are no hydroponics beds visible).