Light Mover

Last Updated: June 16, 2017

Definition - What does Light Mover mean?

A light mover, sometimes referred to as a light rail, is a tool used in larger grow rooms to maximize lighting.

A light mover is a device that mechanically moves a grow light back and forth, or in some other type of fixed pattern, over the plants beneath it. The light mover helps deliver more light to plants so that all parts of the plant receive the same amount of light.

They are highly beneficial when growing many plants in rows; it is believed that light movers can increase the coverage of a light by up to 140%.

MaximumYield explains Light Mover

Light movers come in two basic configurations: rails and trolley-like wheels, or spinning arms that resemble a ceiling fan. Light rails tend to be more popular because they can accommodate more types of systems, including air-cooled fixtures as well as T5s and LEDs. Light rails are also best for rectangular rooms, the most common growroom configuration out there.

Light rails come in a variety of lengths, but most can be designed or customized to fit any application. Many growers prefer light movers that pause at each end of the rail for a slight while to provide more even light distribution to plants growing at the ends. Track lengths vary from model to model, but a common range is between three and five feet long.

Light movers are said to be fairly affordable and easy to set up, but they do require electricity, which will ultimately increase operating costs. While light movers in the grow room help serve more cannabis plants per lamp and make it possible to lower a high-heat fixture like an HID lamp without the risk of burning your plants, light movers aren't for every grower. They are a bit noisy, require some testing and grow room reconfiguration, and require additional electrical outlets.

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