Top 10 400 Watt MH Grow Light Bulb – Plant Growing Light Bulbs

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1. iPower

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IPower GLBULBM400 400W Grow Light Bulb Metal Halide MH Conversion Lamp for Plants with High PAR Enhanced Blue and Violet Spectrums CCT 6000K

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iPower #ad - Exceptional bulb life: 12, 000 hours. Extra-low lumen depreciation: maintaining over 90% of initial lumen output after running for 5, 000 hours. High lumen output: 400-watt, compatible with electronic and magnetic ballast, 36, 000 lumens output, E39 base.

Ideal for rapid growth phase of plants. Greatly accelerates flower growth and enhance fruiting. Special designed for plant growth: cct 6, 000k, enhanced blue & violet spectrum and high PAR photosynthetic active radiation to stimulate vegetative growth. New long lasting life with a high lumen output and low energy consumption. Please wait at least 5 minutes after power shut off before striking again. Note: allow 3-5 minutes for full bright. Power source type: Corded Electric.
BrandiPower #ad
ManufactureriPower #ad
Height2 Inches
Length11 Inches
Weight0.5 Pounds
Width2 Inches
Part NumberGLBULBM400
ModelGLBULBM400

2. iPower

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IPower GLBULBM400X2V1 400W Grow Light Bulb Metal Halide MH Conversion Lamp for Plants with High PAR Enhanced Blue and Violet, 2-Pack, Spectrums CCT 6000K

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iPower #ad - Exceptional bulb life: 12, 000 hours. New long-lasting life with a high lumen output and low energy consumption. Allow 3-5 minutes for full bright.

High lumen output: 400w, 000 lumens output, 36, compatible with electronic and magnetic ballast, E39 base. Special designed for plant growth: designed specifically for professional hydroponic plant cultivation. Cct 6, 000k, enhanced blue & violet spectrum and high PAR photosynthetic active radiation to stimulate vegetative growth. Package includes 2 pack bulbs. Extra-low lumen depreciation: maintaining over 90% of initial lumen output after running for 5, 000 hours. Please wait at least 5 minutes after power shut off before striking again.
BrandiPower #ad
ManufactureriPower #ad
Height3 Inches
Length13 Inches
Width5 Inches
Part NumberGLBULBM400X2V1
ModelGLBULBM400X2V1

3. Eye Hortilux

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Eye Hortilux Bulb MH 400W E-start

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Eye Hortilux #ad - Backed by manufacturer’s warranty. Hydrofarm only offers the best bulbs in the industry. Another great item from Flora Hydroponics. Great for indoor gardening or supplemental greenhouse lighting. We carry all hps, CMH, mh, DE bulbs.
BrandEye Hortilux #ad
ManufacturerEye Hortilux #ad

4. VIVOSUN

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High PAR Enhanced Red and Orange Spectrums CCT 2100K, Ultra Bright 55,000 Lumens, VIVOSUN 2-Pack 400 Watt High Pressure Sodium HPS Grow Light Bulb Lamp

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VIVOSUN #ad - Optimized 2100k red & orange spectrum and high PAR Photosynthetic Active Radiation to stimulate flower growth and enhance fruiting. Startup time: allow 2-3 mins for full bright; After power off, do please wait at least 5 mins before striking again. Extra-low lumen depreciation: Maintaining over 90% of initial lumen output after running for 5, 000 hours. Lifetime: 24, 000 hours. 400w vivosun hps bulb compatible with electronic and magnetic ballasts, 55000 Lumens, E39 Base.
BrandVIVOSUN #ad
ManufacturerVIVOSUN #ad
Weight1.1 Pounds

5. PROTOPIA

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Great for Commercial Applications, 36000Lumens, Metal Halide Grow Light Bulb, Protopia MH400WT46 MH 400 Watt Growing Lights, for Indoor Plants, 6000K

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PROTOPIA #ad - Great for commerical applications where a large vegetative footprint is required. High quality quartz glass for consistent spectral output and PAR production. Allow 3-5 mins for full bright, wait at least 5 min after power shut off before striking again. Color temp: 6000k, cri:70, initial par: 500μmol/s, base: e39, luminous flux lm: 36000, pulse start capable,LONG LIFETIME: 10000hours lifespan with 1 year warranty. Mimics spring time light, promoting short internomal spacing and lush growth.
BrandPROTOPIA #ad
ManufacturerProtopia #ad
Height11.8 Inches
Length2.1 Inches
Width2.1 Inches
Part Number160A00005F00
ModelMH400W H6K T46 UPS E39

6. Hortilux

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Hortilux Eye Daylight Blue Metal Halide MH Plant Grow Light Lamp Bulb E-Ballast Compatible, 400W

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Hortilux #ad - Feature a one-year warranty. Is e-ballast compatible. Features the exclusive Hortilux spectrum. Keeps plants compact and directs more energy into flower production. Is perfect for professional uses, including: in-plant physiological research, biotechnology industry and pharmacology industry.
BrandHortilux #ad
ManufacturerHortilux #ad
Height2.6 Inches
Length11.7 Inches
Weight0.65 Pounds
Width2.7 Inches
Part Number901792-01
Model901792-01

7. iPower

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1-pack, iPower GLBULBM400A 400W Grow Light Bulb Metal Halide MH Conversion Lamp for Plants with High PAR Enhanced Blue and Violet, Spectrums CCT 6000K

#ad
iPower #ad - Enhanced blue & violet spectrum and high PAR photosynthetic active radiation to stimulate vegetative growth. Greatly accelerates flower growth and enhance fruiting.

Exceptional bulb life: 12, 000 hours. High lumen output: 400-watt, 000 lumens output, 36, compatible with electronic and magnetic ballast, E39 base. Please wait at least 5 minutes after power shut off before striking again. Color temp 6000K, special designed for plant growth. Startup time: allow 3-5 minutes for full bright. Extra-low lumen depreciation: maintaining over 90% of initial lumen output after running for 5, 000 hours. Ideal for rapid growth phase of plants. Long lasting life with a high lumen output and low energy consumption.
BrandiPower #ad
ManufactureriPower #ad
Height3 Inches
Length13 Inches
Width3 Inches
Part NumberGLBULBM400A
ModelGLBULBM400A

8. iPower

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IPower 600 Watt HPS MH Digital Dimmable Grow Light System Kits Wing Reflector Set with Timer

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iPower #ad - 600w digital dimmable electronic ballast: support 120v/240v input; dimmable Options: 50%, 75%, 100%; 8 Feet heavy-duty power cord included; Stable power output ensure flicker free light. 1 x pair of 8-ft adjustable ratchet clip hanger Rope: hold up to 150 lbs; 24-hour Plug-in Mechanical Timer: 15 minutes increments.

Caution: this system will generate too much heat to be used in an enclosed area without ventilation. 1 x 600w super hps bulb 2100k; 1 x 600w mh bulb 6000k; optimized spectrum and high PAR Photosynthetic Active Radiation to promote healthy plant growth and soonest flourish.

We recommend the use of an iPower inline fan. Adequate ventilation is required for all iPower grow light systems. 19-inch wing reflector: up to 4' x 4' light coverage; built-in 15 feet heavy duty lamp cord with E39 Ceramic Mogul Socket and standard Hydroponic S-Plug; highly 95% reflective textured German aluminum maximizes the light reflected to the plants.
BrandiPower #ad
ManufactureriPower #ad
Height6 Inches
Length19 Inches
Weight12.5 Pounds
Width19 Inches
Part NumberGLSETX600DHMWING20T
ModelGLSETX600DHMWING20T

9. VIVOSUN

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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

#ad
VIVOSUN #ad - Lifetime: 24, 000 hours. Optimized 2100k red & orange spectrum and high PAR Photosynthetic Active Radiation to stimulate flower growth and enhance fruiting. Extra-low lumen depreciation: Maintaining over 90% of initial lumen output after running for 5, 000 hours. 400w vivosun hps bulb compatible with electronic and magnetic ballasts, 55000 Lumens, E39 Base. Startup time: allow 2-3 mins for full bright; After power off, do please wait at least 5 mins before striking again.
BrandVIVOSUN #ad
ManufacturerVIVOSUN #ad
Height3 Inches
Length12 Inches
Weight0.42 Pounds
Width3 Inches
Part Number30210

10. iPower

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1 Count Pack of 1, iPower GLBULBM600 600W Grow Light Bulb Metal Halide MH Lamp for Plants High PAR Enhanced Blue and Violet Spectrums CCT 6000K

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iPower #ad - Please wait at least 5 minutes after power shut off before striking again. High lumen output: 60, 000 lumens output, compatible with electronic and magnetic ballast, E39 base.

Exceptional bulb life: 12, 000 hours. Note: allow 3-5 minutes for full bright. Greatly accelerates flowers and fruits growth. Special designed for plant growth: cct 6000k, 600 watt, enhanced blue & violet spectrum and high PAR photosynthetic active radiation to stimulate vegetative growth. New long lasting life with a high lumen output and low energy consumption. Ideal for rapid growth phase of plants. Power source type: Corded Electric. Extra-low lumen depreciation: maintaining over 90% of initial lumen output after running for 5, 000 hours.
BrandiPower #ad
ManufactureriPower Grow Light #ad
Height3 Inches
Length13 Inches
Weight1 Pounds
Width3 Inches
Part NumberGLBULBM600
ModelGLBULBM600