A plumbing system and water transport method. The system includes a global water source, a one way water transport mechanism, a growing tray, and a local buffer. The local buffer separates the global water source and the growing tray to prevent cross-contamination of water. The local buffer also continuously provides water to the growing tray on demand without the need for filtering or dumping of used or excess water. This results in low flow, efficient water transport.

A mobile robot configured for integration with one or more grow space components within a grow space that includes one or more grow modules, the mobile robot including: one or more sensors; a mobility mechanism; a processor; a memory; the mobile robot configured to: determine, by the mobile robot, that a grow space operation should be performed in the grow space; and based on the determination, perform, by the mobile robot, the grow space operation by integrating with at least one other component in the grow space.