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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Elevated Lid Seed Starting Kit - 10 Packs with 120 Cells for Thriving PlantsElevated Lid Seed Starting Kit - 10 Packs with 120 Cells for Thriving Plants $33.99 2X40 Seed Plant Starter Tray with Grow Light Adjustable Humidity Germination Kit2X40 Seed Plant Starter Tray with Grow Light Adjustable Humidity Germination Kit $44.54
Grow Lights for Indoor Plants - 4Ft Full Spectrum for Seed Starting, LedGrow Lights for Indoor Plants - 4Ft Full Spectrum for Seed Starting, Led $149.27 Seed Starter Tray with Grow Light, 5 Pack Plant Germination Kit with Timer SettiSeed Starter Tray with Grow Light, 5 Pack Plant Germination Kit with Timer Setti $49.56
Starter Tray with Grow Light, 12 Flexible Pop-Out Cells, Silicone 1pcs-low LidStarter Tray with Grow Light, 12 Flexible Pop-Out Cells, Silicone 1pcs-low Lid $27.22 Harvest Hydroponic System Kits with Seed Starting System Indoor Garden Black NewHarvest Hydroponic System Kits with Seed Starting System Indoor Garden Black New $193.50
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New ListingPlant Light Indoor Plants 4-Head 80 Led Full Spectrum Grow Light Seed StartingNew ListingPlant Light Indoor Plants 4-Head 80 Led Full Spectrum Grow Light Seed Starting $38.88 Sl1600198 T5Ho Micro T5 Grow Light Garden w/Reflector & 4 Seedling Trays for .Sl1600198 T5Ho Micro T5 Grow Light Garden w/Reflector & 4 Seedling Trays for . $40.03
NutraPonics Pro 5-Shelf Automatic Led Hydroponics Grow & Seed Starting SystemNutraPonics Pro 5-Shelf Automatic Led Hydroponics Grow & Seed Starting System $775.00 2 Set 40 Hole Plant Seed Grow Box Propagation Nursery Seedling Tray & Grow Light2 Set 40 Hole Plant Seed Grow Box Propagation Nursery Seedling Tray & Grow Light $43.69
SunBlaster Sl1600198 T5Ho Micro T5 Grow Light Garden for Seed Starting, BlackSunBlaster Sl1600198 T5Ho Micro T5 Grow Light Garden for Seed Starting, Black $48.99 Ylyycc Seed Starter Tray with Grow Light,40 Cells Seed Starter Kit with HumidtiyYlyycc Seed Starter Tray with Grow Light,40 Cells Seed Starter Kit with Humidtiy $40.48
Starter Tray with Grow Light, 12 Flexible Pop-Out Cells, Silicone Bottom, ReusabStarter Tray with Grow Light, 12 Flexible Pop-Out Cells, Silicone Bottom, Reusab $22.44 Seed Starter Tray Kit with Grow Light | 12 Flexible Pop-Out Cells Silicone Bo.Seed Starter Tray Kit with Grow Light | 12 Flexible Pop-Out Cells Silicone Bo. $32.38
Back to the Roots Hydroponic Grow Kit 3-Pod light indoor self watering Led startBack to the Roots Hydroponic Grow Kit 3-Pod light indoor self watering Led start $50.00 2x 40 Hole Seed Starter Tray with Grow Light Adjustable Humidity Germination Kit2x 40 Hole Seed Starter Tray with Grow Light Adjustable Humidity Germination Kit $44.35
60 Cells Self Watering Seed Starter Tray with Soft Silicone Cells, 5 Pack Reu.60 Cells Self Watering Seed Starter Tray with Soft Silicone Cells, 5 Pack Reu. $41.66 Seed Starter Trays with Grow Lights, 72 Cells Seed Starter Kit with 6PcsSeed Starter Trays with Grow Lights, 72 Cells Seed Starter Kit with 6Pcs $39.63
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 $30.36 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 $63.99
Countetop Hydroponic Systems Harvest Seed Starting W/ Led Indoor GardenCountetop Hydroponic Systems Harvest Seed Starting W/ Led Indoor Garden $65.00 Seed Starter Kit with Grow Light,40 Cells Seed Starter Kit with Humidity Dome, SSeed Starter Kit with Grow Light,40 Cells Seed Starter Kit with Humidity Dome, S $42.80
2X 40 Hole Plant Propagator Seed Tray with Grow Light Full Spectrum Adjustable2X 40 Hole Plant Propagator Seed Tray with Grow Light Full Spectrum Adjustable $44.64 Plant Lights for Indoor Plants, Grow Lights for Seed Starting Auto on & off FullPlant Lights for Indoor Plants, Grow Lights for Seed Starting Auto on & off Full $29.97
5 Pack Seed Starter Tray with Grow Light,Humidity Dome and Base,Mini Green House5 Pack Seed Starter Tray with Grow Light,Humidity Dome and Base,Mini Green House $27.19 Countertop Hydroponic Systems Harvest Seed Starting W/ Led Indoor Garden 20 W UsCountertop Hydroponic Systems Harvest Seed Starting W/ Led Indoor Garden 20 W Us $183.82
2 Packs 80 Cells Seed Starter Trays Kit with 4 Grow Light Seed Starter Kit Se.2 Packs 80 Cells Seed Starter Trays Kit with 4 Grow Light Seed Starter Kit Se. $51.99 2X 40 Holes Seed Trays with Grow Light Full Spectrum Plants Propagator Trays Usa2X 40 Holes Seed Trays with Grow Light Full Spectrum Plants Propagator Trays Usa $44.54
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 $29.99 Seed Starter Kit with Grow Light - 80 Cells Tray for Indoor Planting - 2 PackSeed Starter Kit with Grow Light - 80 Cells Tray for Indoor Planting - 2 Pack $45.99
Seed Starter Tray 80 Cells W/ Grow Light Adjustable Humidity Indoor Gardening UsSeed Starter Tray 80 Cells W/ Grow Light Adjustable Humidity Indoor Gardening Us $51.29 2 Pack 40 Holes Seed Trays with Grow Light for Plants Propagator Tray Adjustable2 Pack 40 Holes Seed Trays with Grow Light for Plants Propagator Tray Adjustable $43.69
Plant Stand Rack with 2' or 4' Floro T5 Grow Light Garden Seed Jump Start SystemPlant Stand Rack with 2' or 4' Floro T5 Grow Light Garden Seed Jump Start System $34.95 to 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) $33.95
Complete Indoor Grow Bundle - Lights, Ventilation, Nutrients, Tent, and More!Complete Indoor Grow Bundle - Lights, Ventilation, Nutrients, Tent, and More! $500.00 Sunco Grow Light Led, 20W, Full Spectrum, for Seed Starting, Seedling, 2ftSunco Grow Light Led, 20W, Full Spectrum, for Seed Starting, Seedling, 2ft $63.22
Viparspectra Led Grow Lights for Seed Starting Vegetables Bloom 23.6"x11"Viparspectra Led Grow Lights for Seed Starting Vegetables Bloom 23.6"x11" $151.19
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Prices current as of last update, 11/06/24 4:14pm.

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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