Lighting systems and devices that include a plurality of lighting elements electrically coupled together and disposed on a planar body, and methods for installing lighting devices. The planar body being sized to removably fit within an incubation device such that a consistent light is provided to the contents of the incubation device without any interference in the operation of the incubation device, or the removal or insertion of trays, baskets, setters, or other containers that fit within the incubation device. The consistent light can include the application of a specific wavelength of light or a narrow band of wavelengths of light that promote a biological response in the contents (e.g., a plurality of eggs) of the incubation chamber.
