6-Pack 600 Watt Pressure Sodium HPS Grow Light Bulb High PAR Enhanced Red and Orange Spectrums CCT 2100K for Plants. Professional design for hydroponic plant cultivation: CCT 2100K, optimized red & orange spectrum and high PAR (photosynthetic active radiation) to stimulate flower growth and enhance fruiting. High lumen output: 85,000 lumens output, compatible with electronic and magnetic ballast, E39 base. Extra-low lumen depreciation: Maintain over 90% of initial lumen output after running for 6,500 hours. Long-lasting bulb life: 32,000 hours and high-power efficiency.Power source type: corded electric. Startup time: Allow 3-5 minutes for full bright. Please wait at least 5 minutes after power shut off before striking again. Produces light by an electric arc through the sodium mixture within the filament. The sodium light with its superior long-wavelength light and lumen-per-watt performance is best suited for plants in the flowering stage. Red & orange spectrum and high PAR made specially for optimizing flower growth. The item "6-Pack 600 Watt Pressure Sodium HPS Grow Light Bulb High PAR Enhanced Red" is in sale since Saturday, January 23, 2021. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Hydroponics\Grow Lighting & Accessories\Grow Lights & Light Bulbs". The seller is "wowbazar" and is located in Multiple warehouse USA. This item can be shipped to United States.