400 Watt Grow Light Bulbs

Got questions about plant lighting? Check out GYO's guide to Lighting Your Indoor Garden and light it up the right way!

Need help determining the best lighting for your space? Call the GYOstuff grow light experts at (617) 945-1654. We're here to help!

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Hortilux 400W e-Start Metal Halide Bulb Hortilux 400W Blue (Daylight) Metal Halide Bulb Hortilux 400W Metal Halide Horizontal HO Bulb
Hortilux 400W e-Start Metal Halide BulbHortilux 400W Blue (Daylight) Metal Halide BulbHortilux 400W Metal Halide Horizontal HO Bulb

Electronic ballast friendly

Premium, high quality grow bulb

Cost effective 400W metal halide bulb

$76.95

$64.99

$129.95

$104.99

$74.95

$59.99

Hortilux 400W Super HPS Enhanced Spectrum Bulb Ushio 400W Super HPS Bulb Ushio 400W Super MH HPS-to-MH Conversion Bulb
Hortilux 400W Super HPS Enhanced Spectrum BulbUshio 400W Super HPS BulbUshio 400W Super MH HPS-to-MH Conversion Bulb

For big, robust blooms. The best HPS grow bulb available.

400W super high pressure sodium bulb

400W metal halide conversion bulb

$94.95

$74.99

$75.95

$59.99

$89.95

$79.99

Sylvania 400W HPS Bulb Sylvania 400W MH Horizontal (High Output) Bulb Sylvania 400W MH Universal Bulb
Sylvania 400W HPS BulbSylvania 400W Metal Halide Horizontal (High Output) BulbSylvania 400W Metal Halide Universal Bulb

400W high pressure sodium grow bulb

400W metal halide grow bulb

400W metal halide grow bulb

$25.95

$19.99

$61.95

$47.99

$33.95

$24.99

400W MH Unv Cool Deluxe 400W MH Warm Deluxe Sunmaster Full Nova 400W Metal Halide 6000K Universal Bulb
Sunmaster 400W Metal Halide Universal Cool Deluxe BulbSunmaster 400W Metal Halide Warm Deluxe BulbSunmaster Full Nova 400W Metal Halide 6000K Universal Bulb

400W metal halide grow bulb

400W metal halide grow bulb

The best all-in-one bulb

$69.95

$58.99

$79.95

$63.99

$79.95

$64.99

Agrosun 400W Gold Metal Halide Horizontal Bulb SolarMax 400W HPS-to-MH Conversion Bulb Xtrasun 400W HPS Bulb
Agrosun 400W Gold Metal Halide Horizontal BulbSolarMax 400W HPS-to-MH Conversion BulbXtrasun 400W HPS Bulb

Halide bulb with more red than other halides

400W metal halide conversion bulb

400W high pressure sodium bulb

$69.95

$59.99

$113.95

$99.99

$19.95

$14.99

1 - 15 of 15 items