Dual spectrum compact fluorescent grow light. Actual length is about 40cm.Incandescent lightbulb
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Grow Lights

A Grow light is an electric lamp designed to promote plant growth by emitting an electromagnetic spectrum appropriate for photosynthesis. It emits a light spectrum similar to that from the sun, allowing indoor growth with outdoor conditions. more...

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Different light spectrums are used for the different stages of plant growth. The initial vegetative stage requires blue spectrum of light, whereas the later 'flowering' stage is usually done with red/orange spectrums. The lights can be bought by spectrum colour specifically, or some companies such as Sylvania Grolux produce a full spectrum bulb which caters for all stages of growth.

The light is usually used in conjunction with a reflector, to control and intensify the light emissions, and will include an electrical ballast to control the flow of current flowing to the light. This is required because of the high intensity of the light that is necessary to produce something akin to sunlight.

Lamp types used as grow lights include high-intensity discharge lamps, fluorescent lamps and LEDs. Grow lights are most used for indoor gardening, including indoor hydroponics and aquatic plants.

The most widely used lights for professional indoor flower and vegetable growing are HPS/SON (high pressure sodium) and MH (metal halide). These are types of HID or high-intensity discharge lamps.

The bigger the plant gets the more light it requires; if there is not enough light, a plant will not grow, regardless of other conditions.

For indoor gardening one of the most important topics is light density, measured in lux. Light density is the amount of light incident on a surface. One lux equals one lumen (unit) of light falling on an area of one square meter. A brightly lit office would be illuminated at about 400 lux. In Imperial (pounds-feet) terms, a foot-candle, or the intensity of a standard candle on an area of 1 square foot, is about 10.76 lux.

Cool white fluorescent lamps are sometimes used as grow lamps. These offer slightly lower performance, a white light, and lower purchase cost.

Read more at Wikipedia.org


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450W Led Grow Light Full Spectrum 6 Bars Samsung Led Lm281B For Indoor Plants Us450W Led Grow Light Full Spectrum 6 Bars Samsung Led Lm281B For Indoor Plants Us $199.99 5Pcs Seed Starter Trays with Grow Light Seed Growing Starting Germination Trays5Pcs Seed Starter Trays with Grow Light Seed Growing Starting Germination Trays $21.99
T5 Grow Lights for Seed Starting, 16 inches, 2-Count (10W 2 Count (Pack of 1)T5 Grow Lights for Seed Starting, 16 inches, 2-Count (10W 2 Count (Pack of 1) $27.94 Foldable Samsung Led Grow Light Bar Dimmable 640W Full Spectrum Growing LampFoldable Samsung Led Grow Light Bar Dimmable 640W Full Spectrum Growing Lamp $299.98
Led Grow Lights for Seed Starting with Stand, 2ft 60W Full Spectrum Seedling .Led Grow Lights for Seed Starting with Stand, 2ft 60W Full Spectrum Seedling . $88.30 2000W Led Grow Light 4x4ft coverage Full Spectrum for Indoor Plant Hydroponics2000W Led Grow Light 4x4ft coverage Full Spectrum for Indoor Plant Hydroponics $99.98
Grow Light for Seed Starting with Stand,T5 Grow Lights 1.4Ft,Seed StarterGrow Light for Seed Starting with Stand,T5 Grow Lights 1.4Ft,Seed Starter $38.75 Grow Lights for Seed Starting 16" Full Spectrum 6500K with Timer 2 PackGrow Lights for Seed Starting 16" Full Spectrum 6500K with Timer 2 Pack $33.73
Grow Lights for Seed Starting with Stand, 2ft T5 144 Leds Full SpectrumGrow Lights for Seed Starting with Stand, 2ft T5 144 Leds Full Spectrum $58.96 Phlizon 1000W Led Grow Light Full Spectrum Hydroponics Indoor Plants All StagesPhlizon 1000W Led Grow Light Full Spectrum Hydroponics Indoor Plants All Stages $99.99 to
Phlizon Foldable 1000W/640W Led Grow Light Samsung Leds for Hydroponic GardeningPhlizon Foldable 1000W/640W Led Grow Light Samsung Leds for Hydroponic Gardening $99.98 to Phlizon 640W Factory Wholesale Full Spectrum Bloom Veg High Par Led Grow LightPhlizon 640W Factory Wholesale Full Spectrum Bloom Veg High Par Led Grow Light $299.98
Seed Starter Tray with Grow Light, 2 Packs 80 Cells Seed Starting Kit, Reusab.Seed Starter Tray with Grow Light, 2 Packs 80 Cells Seed Starting Kit, Reusab. $54.56 Phlizon Smart 6500 640W Led Grow Light 8Bar W/Samsungled Commercial Co2 GrowPhlizon Smart 6500 640W Led Grow Light 8Bar W/Samsungled Commercial Co2 Grow $299.98
Phlizon 640W 240W Led Grow Light Full Spectrum Lamp for Indoor Plants Veg BloomPhlizon 640W 240W Led Grow Light Full Spectrum Lamp for Indoor Plants Veg Bloom $99.77 to 640W Phlizon Led Grow Light Bar Full Spectrum Dimmable and Foldable for Gardenin640W Phlizon Led Grow Light Bar Full Spectrum Dimmable and Foldable for Gardenin $99.97 to
1000W Led Grow Light Full Spectrum Dimmable High Efficiency for Hydroponics1000W Led Grow Light Full Spectrum Dimmable High Efficiency for Hydroponics $99.58 to Full Spectrum Led Grow Lights 2Ft 4Ft Plant Light Fixtures Seed Starting 20W 40WFull Spectrum Led Grow Lights 2Ft 4Ft Plant Light Fixtures Seed Starting 20W 40W $44.26 to
16" Grow Lights for Seed Starting, Full Spectrum Grow Lights for Indoor Plants16" Grow Lights for Seed Starting, Full Spectrum Grow Lights for Indoor Plants $31.02 joyhalo 40 Cell Seed Starter Kit with Grow Light and Graphene Heating Mat, Rejoyhalo 40 Cell Seed Starter Kit with Grow Light and Graphene Heating Mat, Re $58.99
Full Spectrum Led Indoor Garden Seed Starting Plant Grow Lights Set of 6Full Spectrum Led Indoor Garden Seed Starting Plant Grow Lights Set of 6 $53.10 2 Head Grow Lights for Seed Starting, Full Spectrum Grow Lights for Indoor Pl.2 Head Grow Lights for Seed Starting, Full Spectrum Grow Lights for Indoor Pl. $22.35
60-Cell Self-Watering Seed Starter Tray with Grow Light, Seed Starter Kit with 460-Cell Self-Watering Seed Starter Tray with Grow Light, Seed Starter Kit with 4 $59.11 800W Dimmable Commercial Grow Lights Daisy Chain Detachable 2.9umol/J800W Dimmable Commercial Grow Lights Daisy Chain Detachable 2.9umol/J $19.58 to
Phlizon 1000W 320W W/Samsung Led Grow Light Bar Full Spectrum Indoor Lamp FlowerPhlizon 1000W 320W W/Samsung Led Grow Light Bar Full Spectrum Indoor Lamp Flower $419.58 Seed Starter Tray 5 Pack Seed Starter Kit with Grow Light and Humidity Dome ReusSeed Starter Tray 5 Pack Seed Starter Kit with Grow Light and Humidity Dome Reus $35.99
Grow Light for Seed Starting with Stand,T5 Grow Lights 1.4Ft,Seed Starter LightGrow Light for Seed Starting with Stand,T5 Grow Lights 1.4Ft,Seed Starter Light $62.92 Seed Starter Tray with Grow Light, 2 Packs 80 Cells Seed Starting Kit Seedling SSeed Starter Tray with Grow Light, 2 Packs 80 Cells Seed Starting Kit Seedling S $56.99
Grow Lights for Seed Starting with Stand, 2Ft T5 144 Leds Full Spectrum SeedlingGrow Lights for Seed Starting with Stand, 2Ft T5 144 Leds Full Spectrum Seedling $62.97 Grow Lights for Seed Starting, 2Ft Led Full Spectrum Seedling Lights with StandGrow Lights for Seed Starting, 2Ft Led Full Spectrum Seedling Lights with Stand $68.20
Self Watering Seed Starter Kit with Grow Light, 2/6 Pack /72 Cells Seed StarterSelf Watering Seed Starter Kit with Grow Light, 2/6 Pack /72 Cells Seed Starter $24.49 to Seed Starter Tray Kit w/ Grow Light & Humidity Dome – 5 Pack, Indoor UseSeed Starter Tray Kit w/ Grow Light & Humidity Dome – 5 Pack, Indoor Use $35.99
4Pcs 4Ft Led Grow Light Kits Plant Light Full Spectrum Seed Starting Gardening4Pcs 4Ft Led Grow Light Kits Plant Light Full Spectrum Seed Starting Gardening $74.22 T5 Grow Lights for Seed Starting, 16 Inches, 2-Count (10W X2) Full Spectrum LedT5 Grow Lights for Seed Starting, 16 Inches, 2-Count (10W X2) Full Spectrum Led $28.18
Phlizon Fd8000 Fd6500 Full Cycel Dimmable Led Grow Lights for Indoor CommercialPhlizon Fd8000 Fd6500 Full Cycel Dimmable Led Grow Lights for Indoor Commercial $17.91 to New ListingT5 Grow Lights for Seed Starting, 16 inches, 2-Count (10W x2) Full Spectrum L.New ListingT5 Grow Lights for Seed Starting, 16 inches, 2-Count (10W x2) Full Spectrum L. $29.60
T5 Grow Lights for Seed Starting, 16 in Long, 2-Count (10W X2) Full Spectrum LedT5 Grow Lights for Seed Starting, 16 in Long, 2-Count (10W X2) Full Spectrum Led $30.70 4-Pack Seed Starter Kit with Adjustable Grow Lights & 2 Heat Mats – 5'4-Pack Seed Starter Kit with Adjustable Grow Lights & 2 Heat Mats – 5' $88.67
Led Grow Lights for Seed Starting with Stand, 2ft 60W Full Grow Light Stand-WLed Grow Lights for Seed Starting with Stand, 2ft 60W Full Grow Light Stand-W $87.68 60W Led Grow Lights for Seed Starting, 2Ft Hanging Full Spectrum Seedling Lights60W Led Grow Lights for Seed Starting, 2Ft Hanging Full Spectrum Seedling Lights $76.53 to
40 Cell Seed Starter Kit with Grow Light and Graphene Heating Mat, Reusable Seed40 Cell Seed Starter Kit with Grow Light and Graphene Heating Mat, Reusable Seed $58.99
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Prices current as of last update, 06/06/25 8:14am.

See also...
Grow Light, Grow Lights, Hydroponics & Seed Starting, Gardening & Plants
Grow Light Hps, Grow Lights, Hydroponics & Seed Starting, Gardening & Plants

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