Metal Halide E40(screw) 1000 Watts BulbMercury bulbs are high intensity light bulbs that provide a huge quantity of light, which is typically required for street lighting and security lights. An orange white light, which is frequently seen in street lights, is produced by the interaction of metals and gases inside the glass tube. Due of the wide color temperature spectrum produced and the consequently low operating cost, these lights are preferred by indoor gardeners for general