An apparatus includes a sensor array and a grow light array. The sensor array is configured to determine a light spectrum sense parameter based (at least in part) on output(s) of one or more sensors of the sensor array. The grow light array is configured to adjust a spectrum of light output from the grow light array based at least in part on the light spectrum sense parameter. The grow light array includes at least one grow light having an output that is adjusted when the spectrum of light output from the grow light array is adjusted. The grow light is configured to provide a light output incident upon the sensor(s). One or both of the sensor(s) and the grow light are movable such that the grow light is movable in relation to the sensor(s) and/or the sensor(s) are movable in relation to the grow light.