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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Apollo Growing Light Fixtures Horticulture 5 Gallon 8-Bag Herbal Ice Bubble HashApollo Growing Light Fixtures Horticulture 5 Gallon 8-Bag Herbal Ice Bubble Hash $26.99 New 7 Day Dual Outlet Switch Digital Electric Light Timer 15A 1725W Ul ListedNew 7 Day Dual Outlet Switch Digital Electric Light Timer 15A 1725W Ul Listed $112.98
Dual Head Led Grow Light Pathonor Led Plant Grow Lamps with Spring Clamp with.Dual Head Led Grow Light Pathonor Led Plant Grow Lamps with Spring Clamp with. $34.97 Tarantula 1 Kilogram - Na0108XxTarantula 1 Kilogram - Na0108Xx $357.14
Vivosun 19-bulb High Intensity Led Green Light Grow Room Headlight One PackVivosun 19-bulb High Intensity Led Green Light Grow Room Headlight One Pack $13.69 Pressing Screen 9 Inch 25 Micron, GrositePressing Screen 9 Inch 25 Micron, Grosite $12.44
ProCo2 Regular Bucket w/ Handle for 3' x 3' Area - Natural Releasing Carbon DioxProCo2 Regular Bucket w/ Handle for 3' x 3' Area - Natural Releasing Carbon Diox $33.96 Herbal Ice Bubble Bag Essence Extractor Garden Kit 8 Bag Growing Light FixturesHerbal Ice Bubble Bag Essence Extractor Garden Kit 8 Bag Growing Light Fixtures $37.41
200 Count Jiffy 7 Peat Soil 42mm Pellets Seeds Starting Plugs Indoor Seed.200 Count Jiffy 7 Peat Soil 42mm Pellets Seeds Starting Plugs Indoor Seed. $31.72 Dip 'N Grow Liquid Rooting Hormone 2 Ounce 2 ozDip 'N Grow Liquid Rooting Hormone 2 Ounce 2 oz $16.40
Jump Start T5 Strip/Reflector Fixture with Lamp 2-Feet Black 2 ft.Jump Start T5 Strip/Reflector Fixture with Lamp 2-Feet Black 2 ft. $44.98 Vivosun Black and White Panda Film 10' x 10' 5.5 Mil 10*10ftVivosun Black and White Panda Film 10' x 10' 5.5 Mil 10*10ft $18.97
King 300w Full Spectrum 360-870nm Led Grow Light Panel for Greenhouse and Ind.King 300w Full Spectrum 360-870nm Led Grow Light Panel for Greenhouse and Ind. $96.31 EcoPlus Check Valve 3/16 inEcoPlus Check Valve 3/16 in $12.33
10pcs Barbed Elbow Connector Agricultural Garden Irrigation Fittings 20mm Dia10pcs Barbed Elbow Connector Agricultural Garden Irrigation Fittings 20mm Dia $6.03 Grotek Cal Max 1LGrotek Cal Max 1L $15.87
Black Gold 1302030 16-Quart CocoBlend Potting SoilBlack Gold 1302030 16-Quart CocoBlend Potting Soil $11.20 Growtent Garden 5-Gallon 5-Bag Herbal Ice Bubble Hash Bag Essence Extractor KitGrowtent Garden 5-Gallon 5-Bag Herbal Ice Bubble Hash Bag Essence Extractor Kit $28.19
Hydrofarm Hgppspring Replacement Springs Pack of 10Hydrofarm Hgppspring Replacement Springs Pack of 10 $10.73 FoxFarm Dirty Dozen Starter Kit - big bloom tiger grow big bembe cha chingFoxFarm Dirty Dozen Starter Kit - big bloom tiger grow big bembe cha ching $95.99
General Hydroponics Ph Up 1L BaseGeneral Hydroponics Ph Up 1L Base $11.90 Apollo Horticulture Ahfr-Cultivator-1 Indoor Hydroponics Grow Room Light Glas.Apollo Horticulture Ahfr-Cultivator-1 Indoor Hydroponics Grow Room Light Glas. $17.95
True Liberty Bags - Goose 100 Pack - all Purpose Home and Garden BagsTrue Liberty Bags - Goose 100 Pack - all Purpose Home and Garden Bags $94.57 Apollo Horticulture 250 Watt Cfl Compact Fluorescent Grow Light Bulb System ofApollo Horticulture 250 Watt Cfl Compact Fluorescent Grow Light Bulb System of $62.99
AeroGarden Seed Starter System Refill Pack 1AeroGarden Seed Starter System Refill Pack 1 $14.86 Method Seven Operator Led Grow Room GlassesMethod Seven Operator Led Grow Room Glasses $96.29
Jiffy-7 42mm Peat Pellets - 50 CountJiffy-7 42mm Peat Pellets - 50 Count $13.36 Method Seven Resistance Hps Grow Room GlassesMethod Seven Resistance Hps Grow Room Glasses $161.47
Nutrilife Sr-71 4 LiterNutrilife Sr-71 4 Liter $32.41 Thirsty Light CurveThirsty Light Curve $10.07
Grow Light Rope Hanger, Hoohome Pair of 1/8 Inch Heavy Duty 150lb Capacity AdjusGrow Light Rope Hanger, Hoohome Pair of 1/8 Inch Heavy Duty 150lb Capacity Adjus $10.48 Apollo Horticulture Uv400 Led Indoor Growing Hydroponics Grow Light Room Glas.Apollo Horticulture Uv400 Led Indoor Growing Hydroponics Grow Light Room Glas. $19.43
DuraBreeze Inline Fan 6", 435 cfmDuraBreeze Inline Fan 6", 435 cfm $90.64 Blumat Kit Medium with 5 Gallon ReservoirBlumat Kit Medium with 5 Gallon Reservoir $145.68
Professional Grade Grow Room Glasses Indoor/Outdoor Hydroponics Anti Uv Refle.Professional Grade Grow Room Glasses Indoor/Outdoor Hydroponics Anti Uv Refle. $18.28 4" 6" 8" Upgrade Inline Duct Fan Blower High Cfm Ventilation Cool Vent Exhaust4" 6" 8" Upgrade Inline Duct Fan Blower High Cfm Ventilation Cool Vent Exhaust $18.90 to $82.90 List price: Previous Price $40.90
Dyna-Gro Dyfol008 Foliage Pro 11 Oz/ 8 Fl Oz 8OzDyna-Gro Dyfol008 Foliage Pro 11 Oz/ 8 Fl Oz 8Oz $13.00 Root Naturally Endo Mycorrhizae - 4 OzRoot Naturally Endo Mycorrhizae - 4 Oz $12.22
Dyna-Gro Pure Neem Oil Natural Leaf Polish 8 OuncesDyna-Gro Pure Neem Oil Natural Leaf Polish 8 Ounces $16.57 Miracle Gro AeroGarden Love Blooms 3 Pod Seed Kit for all gardens hydroponicsMiracle Gro AeroGarden Love Blooms 3 Pod Seed Kit for all gardens hydroponics $8.38 Was: Previous Price $16.43
Vivosun 2 Pack 19-bulb High Intensity Led Green Light Grow Room HeadlightVivosun 2 Pack 19-bulb High Intensity Led Green Light Grow Room Headlight $19.04 Apollo Horticulture 5 Gallon 8-Bag Herbal Ice Bubble Hash Bag Essence Extract.Apollo Horticulture 5 Gallon 8-Bag Herbal Ice Bubble Hash Bag Essence Extract. $26.31
Apollo Horticulture Purple Reign 6W Mr16 Led Grow Light Bulb for Plant GrowingApollo Horticulture Purple Reign 6W Mr16 Led Grow Light Bulb for Plant Growing $11.40 Plant Revolution Mike O'Rizey Granular Soil Inoculant 4-Ounce 4 ouncePlant Revolution Mike O'Rizey Granular Soil Inoculant 4-Ounce 4 ounce $17.95
King Plus 600w Double Chips Led Grow Light Full Specturm for Greenhouse and I.King Plus 600w Double Chips Led Grow Light Full Specturm for Greenhouse and I. $120.99 Hydrofarm Tm01015D Dual Outlet Grounded Timer , New, Free ShippingHydrofarm Tm01015D Dual Outlet Grounded Timer , New, Free Shipping $12.33 List price: Previous Price $15.99
Miracle Gro AeroGarden Thai Pepper 7 Pod Seed Kit Hydroponics nutrient Non GmoMiracle Gro AeroGarden Thai Pepper 7 Pod Seed Kit Hydroponics nutrient Non Gmo $11.72 Was: Previous Price $22.99 Carrot Design Newspaper Pot Maker for Diy Biodegradable Seedling Starter PotsCarrot Design Newspaper Pot Maker for Diy Biodegradable Seedling Starter Pots $21.50
Jiffy Jp310 Round Seed Starter Pot, 3", 10-PackJiffy Jp310 Round Seed Starter Pot, 3", 10-Pack $1.19
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Prices current as of last update, 08/19/17 9:28pm.

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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