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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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 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
Seed Starter Tray with Grow Light, 2 Packs 80 Cells Seed Starting Kit Seedlin.Seed Starter Tray with Grow Light, 2 Packs 80 Cells Seed Starting Kit Seedlin. $53.14 Led Grow Lights for Seed Starting - Germinate Seeds Fast with Maximum Yields - GLed Grow Lights for Seed Starting - Germinate Seeds Fast with Maximum Yields - G $25.99
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5 Packs Seed Starter Tray with Grow Light, Elevated Seedling Starter Trays Ki.5 Packs Seed Starter Tray with Grow Light, Elevated Seedling Starter Trays Ki. $31.91 Harvest Elite Indoor Garden Hydroponic System with Led Grow Light and Seed Ki.Harvest Elite Indoor Garden Hydroponic System with Led Grow Light and Seed Ki. $292.74
Seed Starter Tray with Grow Light, 2 Packs 80 Cells Seed Starting Kit, ReusableSeed Starter Tray with Grow Light, 2 Packs 80 Cells Seed Starting Kit, Reusable $55.09 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' $85.81
Led Grow Lights for Seed Starting with Stand, 2ft 60W Full Spectrum SeedlingLed Grow Lights for Seed Starting with Stand, 2ft 60W Full Spectrum Seedling $100.41 T5 Grow Lights for Seed Starting, 16 in Long, 2-Count (10W 2 Count (Pack of 1)T5 Grow Lights for Seed Starting, 16 in Long, 2-Count (10W 2 Count (Pack of 1) $27.64
Versatile 80-Cell Seed Starter Collection with Grow Lights for Home BotanistsVersatile 80-Cell Seed Starter Collection with Grow Lights for Home Botanists $90.22 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 $59.99
SunBlaster Sl1600198 T5Ho Micro T5 Grow Light Garden for Seed Starting, BlackSunBlaster Sl1600198 T5Ho Micro T5 Grow Light Garden for Seed Starting, Black $79.99 Seed Starter Kit with Grow Light, Heat Mat, 7" Humidity Dome & Light StandSeed Starter Kit with Grow Light, Heat Mat, 7" Humidity Dome & Light Stand $72.10
Seed Starter Kit, Seed Starter Tray with Grow Light and Heat Mat, Color Change FSeed Starter Kit, Seed Starter Tray with Grow Light and Heat Mat, Color Change F $38.99 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
Lpmzmbl Led Grow Lights for Seed Starting with Stand, 2ft 60W Full Spectrum SLpmzmbl Led Grow Lights for Seed Starting with Stand, 2ft 60W Full Spectrum S $104.99 4 Bars Grow Lights for Seed Starting, 16" Grow Strip Full Spectrum Grow Light.4 Bars Grow Lights for Seed Starting, 16" Grow Strip Full Spectrum Grow Light. $32.48
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 $40.49 joyhalo 12 Cell Seed Starter Kit with Grow Light and Graphene Heating Mat, Reusajoyhalo 12 Cell Seed Starter Kit with Grow Light and Graphene Heating Mat, Reusa $65.70
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 $27.03 AeroGarden Sprout Indoor In Home Garden with Led Grow Light Seeds White NewAeroGarden Sprout Indoor In Home Garden with Led Grow Light Seeds White New $39.99
4Pcs 4Ft Led Grow Light Kits Plant Light Full Spectrum Seeds Starting Gardening4Pcs 4Ft Led Grow Light Kits Plant Light Full Spectrum Seeds Starting Gardening $64.99 3 Head Grow Lights for Seed Starting, 6000K Full Spectrum Grow Lights for3 Head Grow Lights for Seed Starting, 6000K Full Spectrum Grow Lights for $37.13
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 $54.15 Seed Starter Tray with Grow Light, Self Watering Seed Starting Trays with Dome RSeed Starter Tray with Grow Light, Self Watering Seed Starting Trays with Dome R $47.99
40 Cell Seed Starter Kit with Grow Light and Graphene Heating Mat, Reusable40 Cell Seed Starter Kit with Grow Light and Graphene Heating Mat, Reusable $56.07 Seed Starter Tray, 6 Pack 72 Cells Plant Grow Kit with Tray Kits OnlySeed Starter Tray, 6 Pack 72 Cells Plant Grow Kit with Tray Kits Only $24.59
Seed Starter Tray, 6 Pack 72 Cells Plant Grow Kit with Adjustable Humidity VentSeed Starter Tray, 6 Pack 72 Cells Plant Grow Kit with Adjustable Humidity Vent $29.99 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 $28.49
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 $31.21
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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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