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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Ufo 138W PopularGrow Led Grow Light Full Spectrum Plants Veg Flower Lamp PanelUfo 138W PopularGrow Led Grow Light Full Spectrum Plants Veg Flower Lamp Panel $54.89 Was: Previous Price $78.41 iPower Hoists Glrope Pair of 1/8 Inch Heavy Duty Adjustable Grow Light Rope ClipiPower Hoists Glrope Pair of 1/8 Inch Heavy Duty Adjustable Grow Light Rope Clip $9.99
2Pcs Mars 300W Led Grow Light Hydro Indoor Plant Veg Flower Full Spectrum Panel2Pcs Mars 300W Led Grow Light Hydro Indoor Plant Veg Flower Full Spectrum Panel $129.99 Was: Previous Price $185.70 No Pooping Yard Sign in Antique White Cast IronNo Pooping Yard Sign in Antique White Cast Iron $15.78
E27 18W 18 Led Red&Blue Flower Plant Grow Light Garden Hydroponic Lamp Bulbs NewE27 18W 18 Led Red&Blue Flower Plant Grow Light Garden Hydroponic Lamp Bulbs New $3.41 Was: Previous Price $3.59 Full Spectrum E27 18W 18 Led Flower Plant Grow Light Garden Hydroponic Lamp BulbFull Spectrum E27 18W 18 Led Flower Plant Grow Light Garden Hydroponic Lamp Bulb $3.53 Was: Previous Price $3.72
Bubble Magic 5-Gallon Extraction Bags (Set of 3/5/8) (Hash, Herbal Extract, Oil)Bubble Magic 5-Gallon Extraction Bags (Set of 3/5/8) (Hash, Herbal Extract, Oil) $52.99 to $139.95 6Pcs Bestva 600W Full Spectrum Led grow light for Medical plants veg and bloom6Pcs Bestva 600W Full Spectrum Led grow light for Medical plants veg and bloom $627.99
Bubble Magic Shaker Bag/Kit - 73 micron (Hash, Herbal Extract, Oil, Wine)Bubble Magic Shaker Bag/Kit - 73 micron (Hash, Herbal Extract, Oil, Wine) $49.99 to $62.99 General Hydroponics FloraDuo A Gallon - GalGeneral Hydroponics FloraDuo A Gallon - Gal $29.99 Trending at $31.37
Top New T5 4 Ft 4 Bulb Grow Light Fluorescent System With Lamps Veg 6500K Us 48WTop New T5 4 Ft 4 Bulb Grow Light Fluorescent System With Lamps Veg 6500K Us 48W $107.49 10pc 3/4" Click Hose Clamps High Quality $Save$ With Bay Hydro $10pc 3/4" Click Hose Clamps High Quality $Save$ With Bay Hydro $ $8.95
Gro1 Herbal Extraction Bags 32-Gallon (Set of 5/8) (Hash, Bubble magic, Wine)Gro1 Herbal Extraction Bags 32-Gallon (Set of 5/8) (Hash, Bubble magic, Wine) $119.95 to $199.95 Top T5 2 Ft 4 Bulb Grow Light Fluorescent System w Lamps Veg 6500K NewTop T5 2 Ft 4 Bulb Grow Light Fluorescent System w Lamps Veg 6500K New $89.99
1M 5050 60Led Strip Light Plant Growing Hydroponic Red Blue 7:1 Waterproof 12V1M 5050 60Led Strip Light Plant Growing Hydroponic Red Blue 7:1 Waterproof 12V $8.79 Sun System Great White 6" Air Cooled Reflector Grow Light Fixture Hood sunlightSun System Great White 6" Air Cooled Reflector Grow Light Fixture Hood sunlight $199.95
Grow 'n Serve Microgreen Kit Attractive Table Centerpc Planter Tray Fiber Soil SGrow 'n Serve Microgreen Kit Attractive Table Centerpc Planter Tray Fiber Soil S $31.49 General Hydroponics FloraNova Bloom 1 Gallon 1G 128oz - gh flora nova nutrientGeneral Hydroponics FloraNova Bloom 1 Gallon 1G 128oz - gh flora nova nutrient $57.49
Mars Hydro Led Grow Light Reflector 96 Hydroponic Plant Veg Flower TrueWatt 190WMars Hydro Led Grow Light Reflector 96 Hydroponic Plant Veg Flower TrueWatt 190W $102.00 Bubble Magic 20 Gallon Mini Washing Machine for Herbal Extract (w/ Zipper Bag)Bubble Magic 20 Gallon Mini Washing Machine for Herbal Extract (w/ Zipper Bag) $299.95
Hygrozyme Enzyme formula organic enzyme stimulator 1L 4L 10LHygrozyme Enzyme formula organic enzyme stimulator 1L 4L 10L $27.25 to $229.95 Sun System Silver Sun Reflector Grow Light Fixture Hood HydroponicSun System Silver Sun Reflector Grow Light Fixture Hood Hydroponic $179.95
Horticulture Reflective Mylar Hydroponic Grow Tent for Plant GrowingHorticulture Reflective Mylar Hydroponic Grow Tent for Plant Growing $80.99 to $206.99 Was: Previous Price $89.99 Grow More - Mendocino - Avalanche Gallon - Flower Ripener & HardenerGrow More - Mendocino - Avalanche Gallon - Flower Ripener & Hardener $54.23
New! Foxfarm Fx14047 pH Adjusted Happy Frog Organic Potting Soil Mix | 2 Cu FtNew! Foxfarm Fx14047 pH Adjusted Happy Frog Organic Potting Soil Mix | 2 Cu Ft $49.99 Build!T Rize Hanging Cable System Buildit Grow Light Hanger Fixture Heavy DutyBuild!T Rize Hanging Cable System Buildit Grow Light Hanger Fixture Heavy Duty $22.99
240W Led Grow Light Mars Reflector Lamp Full Spectrum Indoor Plants Veg/Flower240W Led Grow Light Mars Reflector Lamp Full Spectrum Indoor Plants Veg/Flower $50.00 New Lcd Digital Thermometer Hygrometer Humidity Meter Grow temperture SensorNew Lcd Digital Thermometer Hygrometer Humidity Meter Grow temperture Sensor $8.69
AquaVita 1585 Hydroponic Stainless Steel Sump Water Pump 511585AquaVita 1585 Hydroponic Stainless Steel Sump Water Pump 511585 $109.99 List price: Previous Price $134.99 Planet Natural Einstein Oil Leaf Polish, 4-OuncePlanet Natural Einstein Oil Leaf Polish, 4-Ounce $19.80
Sun System Vertical Burning 48" Parabolic Reflector Grow Light FixtureSun System Vertical Burning 48" Parabolic Reflector Grow Light Fixture $82.00 Monterey Garden Insect Spray with Spinosad Ready-to-Spray 16ozMonterey Garden Insect Spray with Spinosad Ready-to-Spray 16oz $29.43
Populargrow Cob Reflector 800W led grow light Hydroponic System Grow Used LampPopulargrow Cob Reflector 800W led grow light Hydroponic System Grow Used Lamp $299.00 Bubble Magic Shaker Bag/Kit, 120-micron (Hash, Herbal Extraction, Oil, Wine)Bubble Magic Shaker Bag/Kit, 120-micron (Hash, Herbal Extraction, Oil, Wine) $49.99
9.8Ft 5050 60Led/M Strip Plant Grow Hydroponics Light 4:1 Red Blue Waterproof9.8Ft 5050 60Led/M Strip Plant Grow Hydroponics Light 4:1 Red Blue Waterproof $17.99 2000W dualChips Led Grow Light Plant Veg Lamp Full Spectrum Hydroponic Grow Tent2000W dualChips Led Grow Light Plant Veg Lamp Full Spectrum Hydroponic Grow Tent $215.59
Trimpro AutomatiK Bud Trimmer w/Speed Dimmer Control * Free Shipping! *Trimpro AutomatiK Bud Trimmer w/Speed Dimmer Control * Free Shipping! * $2,464.99 Was: Previous Price $2,899.99 Mars 600W Led Grow Light Lamp Hydro Full Spectrum Panel Indoor Plant Veg FlowerMars 600W Led Grow Light Lamp Hydro Full Spectrum Panel Indoor Plant Veg Flower $96.00
Bubble Magic Shaker BucketBubble Magic Shaker Bucket $22.95 2Pcs Mars Hydro Reflector 192 Led Grow Light Indoor Veg Flower Plant Hydroponic2Pcs Mars Hydro Reflector 192 Led Grow Light Indoor Veg Flower Plant Hydroponic $640.49 Was: Previous Price $1,280.98
General Hydroponics FloraDuo A and B 1 Gallon 128oz Combo gh nutrient flora duoGeneral Hydroponics FloraDuo A and B 1 Gallon 128oz Combo gh nutrient flora duo $62.99 Trending at $65.98 9.8ft 5050 60Led/M Led Strip Plant Grow Hydroponics Light 3:1 Red Blue+12V Power9.8ft 5050 60Led/M Led Strip Plant Grow Hydroponics Light 3:1 Red Blue+12V Power $17.99
10 Pack Replacement 3 Way Connectors Corners For Grow Tent w/ 16mm 5/8" Poles10 Pack Replacement 3 Way Connectors Corners For Grow Tent w/ 16mm 5/8" Poles $6.25 Odor Proof Hockey / Duffle Bag - Smell Free Carbon - Stealth Brand ($160 Retail)Odor Proof Hockey / Duffle Bag - Smell Free Carbon - Stealth Brand ($160 Retail) $79.99 Was: Previous Price $99.99
2Pcs 1200W Full Spectrum Led grow light Panel For indoor flower Medical Plant2Pcs 1200W Full Spectrum Led grow light Panel For indoor flower Medical Plant $403.88 Was: Previous Price $439.00
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Prices current as of last update, 06/22/17 6:48pm.

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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