iPower 400W Grow Light Bulb Metal Halide MH Conversion Lamp for Plants with High PAR Enhanced Blue and Violet

iPower 400W MH Grow Light Bulb Socket E39 this single ended MH bulbs must use E39 lamp base fixtures. Special designed for plant growth CCT: 6000K enhanced blue & violet spectrum and high PAR (photosynthetic active radiation) to stimulate vegetative growth. Ideal for rapid growth phase of plants. High lumen output and high power efficiency. 55 000 Lumens output compatible with electronic and magnetic ballast. Produces light by an electric arc through the vaporized mercury and metal halides a mix of metals and halogens. The filament generates a wider spectrum of wavelengths of light produces more short-wavelength light and has strong light penetration.