Abstract: Systems and methods are disclosed of removing heat generated by lighting, e.g., in an indoor grow environment. An example method includes providing a first manifold with an inlet to receive cool air, and a plurality of outlets. The example method also includes providing a second manifold with a plurality of inlets to receive air, and an outlet. The example method also includes providing ducts connecting the outlets of the first manifold to the inlets of the second manifold. The example method also includes connecting the ducts to lighting fixtures of the indoor grow environment, for air to move through the ducts. The example method also includes providing an air mover to pull air through the manifolds and ducts and remove heated air from an area of the lighting fixtures.

Abstract: A carbon monoxide detection apparatus having one or more carbon monoxide sensors operatively connected to an appliance. The one or more carbon monoxide sensors can detect a threshold level of carbon monoxide and cause the detection apparatus to activate the appliance cutoff switch. Alternatively, the connection to the appliance may be for the measurement of carbon monoxide in a substantially continuously flowing airstream; and/or for measuring in two air locations, one an airstream and the other ambient. An audible alarm may be included for sounding an audible alarm. A separate device may be included which may be activated or deactivated.