Professional Double Ended Super HPS 1000W Grow Light Bulbs 

• - 2-Pack Professional-grade Double Ended 1000W Watts Super Super High Pressure Sodium Grow Light Bulbs, T32.5 Bulb Type, K12x30s/400V Lamp Base. Use with 400V High-frequency (Operating Frequency must be higher than 100 KHz) Electronic Ballasts for corresponding wattage HPS lamp.
• - THE DESIGN EDGE:   Optimized growth light PAR (Photosynthetic Active Radiation) spectrum and flux output made with Expluxs GrowMaster Active PIA Technology.
• - SOLID ENDURANCE:   Enhanced PAR maintenance and lower early failure rate made with Expluxs GrowMaster Advanced Getter Technology to reach 10,000 hours of reliable service lifetime.
• - SUPERIOR PERFORMANCES:   2,150 umol/s High PPF (Photosynthetic Photo Flux) Value, 150,000 Lumens Output, and 97% PPF Maintenance at 10,000 Hours.
• - PROFESSIONAL-GRADE SOLIDITY:   Professional Design (+) Strong Performance (+) Solid Reliability, covered by 1-year warranty against material & workmanship issues.