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1. iPower

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400W, white, iPower Lifgt 400 Watt High Pressure Sodium Super Grow Light Lamp Full Spectrum HPS Bulb for Plants

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iPower #ad - New long lasting life with a high lumen output and high power efficiency. Cct 2, 100k, optimized red & orange spectrum and high PAR photosynthetic active radiation to stimulate flower growth and enhance fruiting.

Note: allow 3-5 minutes for full bright. High lumen output: 400w, compatible with electronic and magnetic ballast, 000 lumens output, 55, E39 base. Special designed for plant growth: designed specifically for professional hydroponic plant cultivation. Please wait at least 5 minutes after power shut off before striking again. Extra-low lumen depreciation: maintaining over 90% of initial lumen output after running for 6, 500 hours. Exceptional bulb life: 32, 000 hours.
BrandiPower #ad
ManufactureriPower #ad
Height7 Inches
Length14 Inches
Width3.5 Inches
Part Number2
Model400 Watt HPS Grow Lifgt Bulb

2. PROTOPIA

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A Classic Choice, 56000Lumens, PROTOPIA HPS Grow Light Bulb Lights HPS400WT46 400 Watt High Pressure Sodium Growing Lights 2000K, for Indoor Plants

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PROTOPIA #ad - More nature growth with enhanced green and blue light. Allow 3-5 mins for full bright, wait at least 5 min after power shut off before striking again. Peaks in the far-red range to stimulate metabolic activity in flowering. Color temp: 2000k, cri:25, luminous flux lm: 56000, base: e39,long liFETIME: 24000hours lifespan with 1 year warranty. Ultra high output:700μmol/s to achieve maximum vegetative growth.
BrandPROTOPIA #ad
ManufacturerProtopia #ad
Height11.8 Inches
Length2.1 Inches
Width2.1 Inches
Part Number110D00005200
ModelHPS400W T46 E39 HO

3. HONGVILLE

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HONGVILLE HPS High Pressure Sodium Grow Light Bulb for Plant Growth, 400 W

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HONGVILLE #ad - Great for growing a garden indoors, you'll need extra lighting in order to produce healthy and dense vegetation. High pressure sodium light helps stimulate flower and fruit production in plants more efficiently.

It is best to use hps grow lights for the fruiting and flowering phase of plant growth or in a 4:1 ratio of hps to MH for best results. Hps high pressure sodium grow lights emit a strong, warm white light that helps to stimulate plant and flower growth. Hps grow lights tend to be much more efficient than other alternatives and have a longer life span, saving you money on energy bills and replacements.
BrandHONGVILLE #ad
ManufacturerHongville #ad
Height10.25 Inches
Length2.75 Inches
Weight0.44 Pounds
Width2.75 Inches
Part NumberHV-HPS-400W
ModelHV-HPS-400W

4. Vegelumax

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CCT 2100K, Ultra Bright 55,000 Lumens,E39 Base,1pack, Vegelumax 400Watt Hydroponic High Pressure Sodium HPS Grow Light Bulb Lamp,High PAR Enhanced Red and Orange Spectrums

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Vegelumax #ad - Extra-low lumen depreciation: maintaining over 90% of initial lumen output after running for 5, 000 hours;. High lumen output: compatible with electronic and magnetic ballast, Ultra Bright at 55000 Lumens output, E39 base;Designed specifically for professional plant cultivation;.

Please do wait at least 5 minutes after power shut off before striking again;. Cct 2, 100k, flower growth, optimized red & orange spectrum and high PAR photosynthetic active radiation to stimulate lush, enhance fruiting and abundant harvests;. Startup time:allow 3-5 minutes for full bright. Exceptional bulb lifetime: long lasting life over 20, 000 hours with a high lumen output and high power efficiency 140 lm/W;. Special designed for plant growth: designed specifically for professional hydroponic plant cultivation. Note:vegelumax single ended HPS bulbs must use E39 lamp base fixtures.
BrandVegelumax #ad
ManufacturerVegelumax #ad

5. iPower

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IPower 400W CCT 2100K Pressure Sodium HPS Grow Light Bulb Lamp with High PAR Enhanced Red and Orange Spectrums for Plants Growth

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iPower #ad - Special designed: designed specifically for professional hydroponic plant cultivation. Note: allow 3-5 minutes for full bright. Power source type: Corded Electric.

Exceptional bulb life: 32, 000 hours. Extra-low lumen depreciation: maintaining over 90% of initial lumen output after running for 6, 500 hours. New long lasting life with a high lumen output and high power efficiency. High lumen output: 400 watt, 55, compatible with electronic and magnetic ballast, 000 lumens output, E39 base. Please wait at least 5 minutes after power shut off before striking again. Cct 2, 100k, optimized red & orange spectrum and high PAR photosynthetic active radiation to stimulate flower growth and enhance fruiting.
BrandiPower #ad
ManufactureriPower #ad
Height2.2 Inches
Length13 Inches
Width2.5 Inches
Part NumberGLBULBH400V1
Model400W CCT 2100K Pressure Sodium HPS

6. iGrowtek

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High PAR Enhanced Red and Orange Spectrums CCT 2000K, Ultra Bright 55000 Lumens,400W High Pressure Sodium Grow Lamp, iGrowtek 400W Super HPS Grow Light Bulb

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iGrowtek #ad - Maintaining over 90% of initial lumen output after running for 5000 hours. Long lasting life 24000hours with a high lumen output and high power efficiency 137lm/W. Allow 3-5 minutes for full bright; Please wait at least 5 minutes after power shut off before striking again. Ultra-bright at 55000 lumens with optimal par output, this lamp falls at 2000K in the red and orange spectrum to stimulate lush, abundant harvests; Designed specifically for professional plant cultivation. Compatible with electronic and magnetic ballast, E39 Base.
BrandiGrowtek #ad
ManufactureriGrowtek #ad

7. TOPHORT

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Blue, TOPHORT 400 Watts Digital Dimmable Electronic Ballast for HPS MH Grow Light Bulb Lamp 400W

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TOPHORT #ad - If your order is more than one month, contact the seller directly, please don't contact Amazon, we will provide you with warranty service. Super-safety:tophort digital ballasts are tuned for minimal total harmonic distortion THD% 99% Power factors replaceable outset fuse by input terminal for short circuit protection short circuit protection by automatic power shut off for ultimate safety fast lamp ignition by lighting up the bulbs within 1-3mins max.

Guarantee assurance:our tophort hps grow light ballasts are ul certified and come with a 2-year warranty against manufacturer defects. Suitable for mh and hps:tophort electronic dimmable ballast compatible with both MH and HPS bulbs, 120V and 240V power supplies. Specification:rating input current 2. 89, start current 096, operating temperature -20~50, Waterproof level IP65, Net weight
BrandTOPHORT #ad
ManufacturerTOPHORT #ad
Part NumberZHENLIUQI400

8. HTG Supply

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Indoor Grow Lamps, eGrow 400 Watt Digital Grow Light Ballast for HPS MH Bulbs, Horticulture

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HTG Supply #ad - Automatically adjusts for hps and MH light bulbs | Fast lamp ignition | Stable voltage output | Virtually silent operation. High frequency lamp drive provides more lumens than magnetic ballasts for improved yields | Soft start ignition improves power efficiency by 15% or more over magnetic.

Measures: 8. 625" x 4" x 2. 75" | plug type: nema 5-15 120v Grounded Cord | Standard-type socket cord receptacle. Built-in cooling fan and integrated heat sink housing minimize ballast component temperatures for extended life and performance. For use with 400 watt hid hps/mh grow light bulbs | multi-volt input 120V/240V | 8 foot heavy-duty grounded power cord included.
BrandHTG Supply #ad
ManufacturerHTGSupply #ad
Part NumberBAL-EG400HPS

9. VIVOSUN

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Easy to Set up, High Stability & Compatibility Enhanced Version, VIVOSUN Hydroponic 400 Watt HPS Grow Light Air Cooled Reflector Kit

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VIVOSUN #ad - Us patented 1/8" rope hanger 1 pair: 8-ft long & 150lbs/pair weight capacity, solid braided polypropylene rope & reinforced metal internal gears to ensure top-safety. Hps grow light bulbs: high par value Photosynthetically Active Radiation, Superior quality & optimized spectrum to promote growth.

24 hour plug-in mechanical timer switch:automates your lighting needs; brings convenience & encourages productive growth with consistency of lighting. Buyers must peel off the inner blue protective film before using; 6" Air Cooled Reflector: Over 90% high reflectivity aluminum ensures soonest flourish of your plants. Ul listed 400w dimmable ballast: runs on 120~240V power supply, comes with 8ft 120V power cord. 15-minute on/off, 60hz, 15a, 24 hours settings; 125v, 1/2hp, 1875w heavy duty construction; Timer mode can be turned off; ETL listed ensures top security & stability.
BrandVIVOSUN #ad
ManufacturerVIVOSUN #ad