A lighting system for stimulating plant growth. The system includes a first power supply, the first power supply configured to supply power to the first array of light fixtures and a second power supply, the second power supply configured to supply power to the second array of light fixtures. The system additionally includes a daisy chain, the daisy chain configured to receive power from the first power supply and supply power to the second power supply and including a plug, the plug configured to insert into a socket in the second array of light fixtures.