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Amazon.com: iPower GLBLST400D Horticulture 400 Watt Digital Dimmable Electronic Ballast for Hydroponic HPS MH Grow Light, 400W : Everything Else
iPower GLBULBH400X2 400 Watt High Pressure Sodium Super Grow Light Lamp Full Spectrum HPS Bulb for Plants, 400W, white
Vegelumax 400W HPS Super Grow Light Bulb,High PAR Enhanced Red and Orange Spectrum,CCT 2100K,Ultra Bright 55,000 Lumens,E39 Base,1pack
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Amazon.com : Ultra-Sun 901528 High Pressure Sodium Lamp, 400W : Home And Garden Products : Patio, Lawn & Garden
Amazon.com : VIVOSUN Hydroponic 400 Watt HPS MH Grow Light Wing Reflector Kit - Easy to Set up, High Stability & Compatibility ( Enhanced Version ) : Patio, Lawn & Garden
Amazon.com: VIVOSUN 1-Pack 400 Watt High Pressure Sodium HPS Grow Light Bulb Lamp - High PAR Enhanced Red and Orange Spectrums CCT 2100K, Ultra Bright 55,000 Lumens : Everything Else
Amazon.com : VIVOSUN Hydroponic 400 Watt HPS MH Grow Light Wing Reflector Kit - Easy to Set up, High Stability & Compatibility ( Enhanced Version ) : Patio, Lawn & Garden
Amazon.com : iPower 400W CCT 2100K Pressure Sodium HPS Grow Light Bulb Lamp with High PAR Enhanced Red and Orange Spectrums for Plants Growth, Transparent : Patio, Lawn & Garden
iPower GLSETX400DHCT6 Horticulture 400 Watt HPS Digital Dimmable Ballast Add-on Wing with Timer, 400W