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MH

Metal Halide (MH) bulbs should be used for the vegetative phase. MH bulbs give off a blue to white spectrum Learn More
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  1. Ultra Sun MH -- 1000 Watt -- 4.2K
    Ultra Sun MH -- 1000 Watt -- 4.2K
    $37.86
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  2. GrowLite Tru Blue MH Lamps - 6500k
    GrowLite Tru Blue MH Lamps - 6500k
    As low as $59.26
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  3. Sun Pulse 250w MH Pulse Start
    Sun Pulse 250w MH Pulse Start
    As low as $78.15
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  4. Venture MH Daylight Bulb, 1000W (5K) BT56
    Venture MH Daylight Bulb, 1000W (5K) BT56
    $89.66
    Out of stock
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  5. Sunmaster Green Harvest MH Conversion Lamp 1000W for HPS Ballast
    Sunmaster Green Harvest MH Conversion Lamp 1000W for HPS Ballast
    $90.14
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  6. Eye Hortilux Blue Daylight Super MH Lamp -- 1000W
    Eye Hortilux Blue Daylight Super MH Lamp -- 1000W
    $170.69 As low as $151.67
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  7. Eye Hortilux Blue Daylight Super MH Lamp - 400W Horizontal
    Eye Hortilux Blue Daylight Super MH Lamp - 400W Horizontal
    $85.76
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  8. Eye Hortilux Standard Metal Halide Bulb -- 1000W
    Eye Hortilux Standard Metal Halide Bulb -- 1000W
    $72.96
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  9. Ultra Sun MH Blue Enhanced -- 1000 Watt -- 10K
    Ultra Sun MH Blue Enhanced -- 1000 Watt -- 10K
    $48.77
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  10. Ultra Sun MH Blue Enhanced -- 1000 Watt -- 7.5K
    Ultra Sun MH Blue Enhanced -- 1000 Watt -- 7.5K
    $51.25
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  11. Ultra Sun MH Blue Enhanced -- 400 Watt -- 7.5K
    Ultra Sun MH Blue Enhanced -- 400 Watt -- 7.5K
    $31.03
    Out of stock
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  12. Ushio AMH-DE Hilux Gro Double-Ended Agro Metal Halide (MH) Lamp - 1000W
    Ushio AMH-DE Hilux Gro Double-Ended Agro Metal Halide (MH) Lamp - 1000W
    $105.63 As low as $96.65
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  13. Eye Hortilux Blue Daylight Super MH Lamp -- 600W
    Eye Hortilux Blue Daylight Super MH Lamp -- 600W
    Special Price $96.11 Regular Price $101.76
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  14. Growers Choice DE 600W MH 10K Finishing Lamp
    Growers Choice DE 600W MH 10K Finishing Lamp
    $95.20
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  15. Growers Choice DE 600W MH Grow 4K Lamp
    Growers Choice DE 600W MH Grow 4K Lamp
    $95.20
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  16. Growers Choice 10K 1000w Double Ended MH Lamp
    Growers Choice 10K 1000w Double Ended MH Lamp
    $79.54 As low as $74.83
    Out of stock
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MH

Metal Halide bulb

HID bulbs are categorized by the type of gas used in the bulb. The primary types used in horticulture include metal halide (MH), and high-pressure sodium (HPS). The main difference between the two bulbs is the type of light spectrum they produce (because of the gas inside). A metal halide lamp is an electrical lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides. Metal Halides also produce more pure white light than the HPS lamps, closer to daylight frequencies making it especially useful for growing plants. The MH bulb focuses on more of a blue spectrum and is used primarily for the vegetative stage of plant life.