12 Sep 2020
25 Best and Coolest Light Bulbs
VIVOSUN 2-Pack Full-Spectrum 315W 3000K Ceramic Metal Halide Grow Light Bulb High Efficiency Low Heat CMH CDM Grow Lamp for Flowering - Grow light coverage vivosun recommends use of this 315w lamp to cover an area of approximately 9 square feet during vegetative growth and approx 6 square feet during the bloom phase. Cool and efficient vivosun’s 3000k cmh lamps run at extra-low operating temperatures and its double glass jacketed design makes it safe for use in either open or enclosed fixtures. High-quality materials vivosun’s precision-built lamps are made from only the highest-quality materials, featuring premium european elliptical pca lamp envelopes for enhanced lumen output and optimized spectra plugs into a pgz18 lamp socket. Strong, long-lasting light this lamp is rated for high 90% lumen maintenance at 8,000 hrs and 85% maintenance at 20,000 hrs 1-year warranty. Intense, full spectrum light delivering 92 cri, 33,000 initial lumens (105 lm/w), and 195 ppf (photosynthetic photon flux), this lamp nourishes your plants with full-spectrum light and stimulates resin production with uv far-red spectra.
12V 35W LED Pool Lights Bulb,Color Changing Replacement Swimming LED Pool Light Bulb for Inground Pool,Pentair and Hayward Under Water Lights Fixture,Switch Control + Remote Control Type,E26/E27 - Read carefully the bullet point and the description before placing an orderthis is the 12 voltage light,not suitable for the 120v housingpay attention to the size of the light diameter 665″(169mm) and high503″(128mm)please check carefully the size of the fixture and make sure the diameter of your fixture is bigger than the light. This pool light bulb is able to lit up 25000 gallon pool,and as a bonus burns up a lot less electricity in the processworks for most pentair hayward light fixture and hayward astrolite series,you can not only simply flip the power switch on and off over and over in order to change the light color modebut also use remote controller to change light modes please be noted,single red mode only 13 watt,not as bright as blue or other color. Direct replacement screw fitting underwater pool light bulbcompatibility hayward astrolite”sp058 series,pentair amerlite your fixture is bigger than the lightadd remote controller and light matching systemfor more details please check the discription. Attentiona one year warranty is provided with each bulb but does not cover the damage due to the wiring of a bulb to a system of different voltage,and water comming into the housing. Attentionremote control will not work properply under two conditions 1 your light fixture position is under water more than 3 feet 2 the light fixture is sealed with metal 100%.
100W LED Grow Light Bulb – Warm White Full Spectrum Plant Light for Indoor Plants, Garden, Aquarium, Vegetables, Greenhouse & Hydroponic Growing by Haus Bright (100W Warm White) - White plant light, hydroponics growing system with 365 days a year of sunlight, only draws 20w power, bulb stays cool, fits standard e26 bulb socket, full spectrum, 18 months warranty, e-book and video included exclusive to haus bright. Led grow light bulb, white full spectrum plant light by haus bright the only indoor grow light led for plants & greenhouse grow lamp acts as hydroponic growing system inside your indoor grow tent don’t risk cheaper brands. Grow lights for indoor plants, superior to small grow light fluorescents, tubes, cfl, t5, t8 multiple grow light bulbs create same power as 300w, 600w, 1000w led grow light with more flexible arrangements best grow light value for money. White led grow light, for medicinal plants, indoor plants, greenhouse, seedlings, succulents, large house plants, seed starting, tomatoes, flowers, vegetables, garden, palms, cactus, herbs, orchids, aquarium, citrus, fish tank, aquaponics, office and winter. Add to cart, to order now with our “no questions asked 30-day satisfaction guarantee” if you are not impressed with the results, please contact us and we will refund your money order more than three haus bright products for big savings.
SkrLights 50FT Globe String Lights, 52 Clear Bulbs Natural Warm G40 End to End Connectable Patio Lights for Backyard Garden Bistro Party Wedding Cafe Hanging Umbrella Indoor Outdoor Lights-Black Wire - ❤ End-to-end design (up to 2 sets)– featuring 50 feet of the highest-quality 18 gauge spt-1 cable with 12″ spacing between bulbs, 6″ lead with male plug, and 6″ tail with female connector the cable is ul listed for safe indoor/outdoor use connect up to 2 light strings (100 ft total) to cover larger areas. ❤ High quality string lights– 52 g40 globe clear bulbs, 5 watt per bulb, 120volts, 250w per string, e12 candelabra screw base each incandescent bulb is 16 inches (slightly smaller than a golf ball). ❤ Installation suggestion of string light bulbs– empty sockets be firstly and then install bulbs every bulbs should be separated, just in case high wind cause two bulbs too close to broken even quality high bulbs are bound to be broken one day and if one bulb burn out, others will also be working. ❤ ip44 waterproof– the waterproof and heatproof lights built-in fuse for safety -ul listed for indoor/outdoor weatherproof, commercial-strength casing withstands extreme temperatures and wet weather so be ease to hang it outdoors to illumine the landscape year-round. ❤ Multiple application– 5w bulbs of power (250w per string), energy-efficient 125v fuse, comes with 1 spare fuse in the male plug ul listed, suitable for indoor/outdoor lighting applications great for patio, backyard, deck, bistro, café, pergola, garden, market, wedding party, and many other occasions or events.
Explux 250W Equivalent LED PAR38 Flood Light Bulbs, Weatherproof, 2600 Lumens, Dimmable, 4100K Cool White, 2-Pack - Ultra bright 2600 lumens high light output to replace a 250w incandescent floodlight one of the brightest led par38 floodlights in industry for heavy-duty uses in garages, workshops, warehouses, basements, barns, gardens, offices, shopping malls, supermarkets, restaurants, hotels, display areas etc. Advanced functionalities dimmable, 2600 lumens, super wide 90° beam spread angle, industry-leading 25,000 hours long rated lifespan. Long-lasting energy savings replaces 250 watts incandescent par38 bulbs by using merely 25 watts of energy and lasts over 20 times longer. Superior outdoor endurance the sealed full-glass body not only has the excellent waterproof nature but also resists the uv under the sun, providing superior weatherproof endurance. Commercial-grade quality assurance 30-day money-back plus 3-year manufacturer quality & workmanship coverage assures a worry-free purchasing with explux commercial lighting.
iPower 600 Watt Metal Halide MH Grow Light Bulb Lamp, High PAR Enhanced Blue and Violet Spectrums CCT 6000K - Note allow 3-5 minutes for full bright please wait at least 5 minutes after power shut off before striking again. Special designed for plant growth cct 6,000k, enhanced blue & violet spectrum and high par (photosynthetic active radiation) to stimulate vegetative growth ideal for rapid growth phase of plants greatly enhances all-around plant growth to stimulate vegetative growth. Exceptional bulb life 12,000 hours new long lasting life with a high lumen output and low energy consumption warranty 1 year. Extra-low lumen depreciation maintaining over 90% of initial lumen output after running for 5,000 hours. High lumen output 60,000 lumens output, compatible with electronic and magnetic ballast, e39 base.
Grow Lights Plant Lights for Indoor Plants, Semai 40W 80 LED Lamp Bulbs, Growing Lamp For Plants Growth with 3/9/12H Timer 10 Dimmable Level 3 Switch Red/Blue Modes Full Spectrum, Adjustable Gooseneck - 【Auto on/off & circular-memory timer】semai grow lights for indoor plants is the latest in plant growth lamps with an automatic timing function and a usb plug (comes with ac adapter) you can set up 3/9/12 hours as needed to ensure that your plants receive the proper amount of lighting at a different stage moreover, when kept plugged in, our grow lamp remembers the latest setting and will automatically turn on at the same time the next day. 【10 dimmable modes & 3 switch modes】our led grow lights have 10 dimmable modes ranging from 10% to 100% and 3 switch modes(red, blue and mixed light) to suit varied stages of plant growth whether in the indoor garden or greenhouse, you can adjust the type and intensity of light to supplement the lack of natural light in plants and meet different stages of plant-growing needs. 【Best quality & service】all grow lights for seedings adopt the technology of overcurrent, overheating, overvoltage protection, can be safely used for indoor plants, greenhouse vegetables etc if you have any dissatisfaction, please feel free to contact us, we will try our best to solve your problem in addition, ‘a spade, rake and shovel’ is an extra bonus, do not hesitate, please buy it with confidence, you will be able to keep your plants healthy even during the winter. 【360-degree adjustable goose necks】the 360-degree flexible goosenecks with clip allow you to adjust the angle and the distance between the light and plants which enlarge the illumination area and provided more efficient lighting for more plants with anti-slip clamp, you can put it anywhere in your home or office, a great choice for indoor garden enthusiasts. 【Four head design-larger lighting area】this newest grow lights for indoor plants designed with four head and 360-degree flexible gooseneck with clip it not only solves the inflexibility and inconvenience of the traditional hanging plant grow lights but also provides greater coverage than the grow lights with two or three arms it is much easier for you to adjust the angle and the distance between the light and plants.
GE Lighting 20996 65-Watt R30 Plant Flood Light Bulb, Plant Light,1-Pack - R30 shape with medium base that makes plants look healthier and greener. Uses 65 watts. Estimated yearly energy costs $783 based on 3 hours per day $011 per kwh. 1 bulb per package. Lasts 18 years based on 3 hours per day usage.
Barrina Grow Light, 144W(6 x 24W, 800W Equivalent), 2ft T8, Super Bright, Full Spectrum Sunlight Plant Light, LED Grow Light Strips, Grow Light Bulbs for Indoor Plants, 6-Pack - Easy installation, with included tape, clips and cable ties, you could install the lights by yourself in minutes plug and play, and you could link up to 12 lights in a series, saving your installation cost and time. What you get, 2 years warranty 6 x barrina led grow lights, 3 x power cords with on/off switch, 5 x connecting cords(48”), 6 x small connectors, 6x installation clips, 12 x tapes, 24 x cable ties. Eyes protection, this grow light are suitable for planting plants in any indoor application sunlight white color temperature makes your eyes feel comfortable it works extremely well for your plant grow tents, plant grow shelves, seedling cultivation, succulents, hydroponic rooms, greenhouses, etc. Full spectrum, barrina led grow lights 2ft provide indoor plants with full-spectrum sunlight replacement it provides the most reasonable grow light wave based on the ratio of the absorption of the plants. Super bright and hight ppfd, consuming only 144w with 576 leds totally, replace 800w general plant lights over 95% light energy can be absorbed by plants the light efficiency can be increased by 17~20% with reflector the shell of our light was made of 100% aluminum which provides the high-efficiency heat dissipation ensuring the longer service life of the led chips.
Barrina LED Grow Light, 144W(6 x 24W, 800W Equivalent), 2ft T8, Full Spectrum, High Output, Linkable Design, T8 Integrated Bulb+Fixture, Plant Lights for Indoor Plants, 6-Pack - Easy installation, plug and play and could link up to 6 grow lights in a series by 48 inches connecting cords also, you could mount to ceiling or hang up for shelf saving your installation cost and time. Quality assurance, 2-year unlimited warranty, easy and fast replacement is offered if any quality issue. Full spectrum, barrina grow light is a great option for plants that in seedling, vegetative and flowering cycle it provides light that plants need, especially blue and red light. Integrated plant light chips, compare with the lamp consisting of only “blue chips” + “red chips”, integrated plant light chips have more efficiency and better color layout. Super bright, consume only 144w with 576 leds totally, replacing 800w general plant lights these grow light provid a higher ppfd.
Lightingwise 4 FT 6500K T5 HO Fluorescent Grow Light Bulbs – Pack of 1,4,8,20,40 (8, 6500k – blue – veg) - Bulb is perfect for seed starting and cloning and can also be used as a full-term light source, – mixing the two spectrums will result in a more complete spectrum for growing, lightingwise bulbs have a 20,000 hour lifespan, our t5 system is designed to compete with high intensity discharge bulbs in terms of light intensity and output. T5 fluorescent bulbs will only depreciate between 8 and 10 percent of their rated lumen output throughout their lives. Superior plant health t5 lamps promote incredible health and bloom of seedlings, cuttings, and produce enough light for full-term growth. Perfect for the flowering stages of plant growth, – the “grow” spectrum is most commonly associated with lush, green, vegetative plant growth. This grow light is formulated to offer you the following benefits dependability man-made light sources experience some level of lumen depreciation over time. Cost-effectiveness less wattage = lower cost., Each lightingwise high output t5 bulb produces an outstanding 5,000 lumens each this is 2x the output of standard t5 bulbs, -the “bloom” spectrum is most commonly associated with the harvest sunlight spectrum with triggers the flowering / budding stage of plant growth. A key factor in switching to t5 lighting is its ability to not only produce better light, but also to do so while consuming far less energy.
AeroGarden AERO505 Fluorescent Grow Light Bulb (2-Pack) - Proprietary light spectrum provides optimal vegetative growth and flowering. We recommend replacing your grow lights every 6 months to maximize your garden’s growing ability. Provides all the light plants need for fast healthy growth indoors — no sunny window needed. Works with miracle-gro aerogarden, aerogarden 3, aerogarden 3sl, aerogarden 3 elite, aerogarden 6, aerogarden 7, chef in a box, chef in a box elite, florist in a box, and florist in a box elite b bulb. Works with any aerogarden needing model 100340 or 100629 grow lights check your grow light for model number.
Brightech Ambience Pro – LED Outdoor Globe String Lights – Hanging 1W Vintage Edison Bulbs – Waterproof Patio Lights Create Cafe Ambience On Your Balcony – 26 Ft – Black - Hang a canopy of gazebo globe lights set the mood for a wedding or party go retro with your outside celebration festoon a decorative carnival look with scalloped strands or go more modern / minimalist with taught, straight ropes across the garden what’s your style. Satisfaction guaranteed warranty our goal at brightech is to provide creative, innovative, beautiful lighting so that everyone can have quality, high end lighting we proudly stand behind all of our products 100% and offer a full 3 year warranty we are committed to making sure you love your purchase, so if for any reason you are not satisfied, please contact us and we will make things right (purchases from amazonwarehousedeals or any other third party seller do not qualify for our warranty). Create a classic atmosphere with old italian bistro lights featuring edison filaments, enjoy your porch or backyard with pergola lights that earn the name, ambience pro, they set the mood just right whether you want to kick back and relax outdoors with a beer, or have a romantic dinner, brightech’s got you covered. Led plug in market lighting suits exterior or indoor space brighten a bedroom with a strand of g40 electric rope lights, or run them up in the gazebo you’re sure to get compliments either way and you’ll impress not just with your style, but also your clever choice these use led technology save 85% on your energy bill vs incandescent, and the globes never get hot the globes produce soft white (2700k) lighting. Commercial grade weatherproof, heavy duty outside lights, these industrial grade back yard lights are so durable thanks to brightech’s weathertite ™ technology the rubber casing is thicker than other brands and envelops the sockets to water proof them and protect the bulb brightech ambience pro strings have withstood 50 mph winds, per reviews.
G E Lighting 44540 Saf-T-Gard Outdoor Post Light Bulb 100Watt, #100F20/TF/STG - We offer 1-year quality guarantee please contact the seller directly if you have any quality problemsfor bulbs replacement, please search b07dn94p21. Shatterproof&safe this led g40 bulbs made of plastic, much shatterproof than traditional glass bulb type low working temperature, and safe for touch. Energy saving each led bulb 04w, much lower wattage will save more energy for you, but the lifespan is 10-20 times of the traditional tungsten bulb candelabra (e12) socket base. Waterproof ip44 professional waterproof dc connector, suitable for indoor outdoor decoration 2700k warm white lights great for patio, backyard, deck, garden, tents, umbrella, canopy, pergola, overhead desk, festoon lighting. Cannot be sold or shipped into the state of california due to state regulations.
10W Bug Zapper Light Bulb T8 Bulb UV Bulb for 20W Bug Zappers (2-Pack) - 2 x 10w replacement bulb for liba 20w electronic indoor bug zapper. Please note, these are sold as 2-pack bulbs, please make sure you order the amount you require. Fits most 20w electronic bug zappers.
Miracle LED Almost Free Energy 100W Spectrum Grow Lite – Daylight White Full Spectrum LED Indoor Plant Growing Light Bulb for DIY Horticulture, Hydroponics, and Indoor Gardens (604293) Single Pack - 9w led replacing 100w flood, massive energy savings. Full spectrum technology led white light that emulates daylight to give your plants the natural light they crave. Afe (almost free energy) certified for garden centers and greenhouses, buy what the pros use. 1900 micromoles of growing power means more energy for your plants. Runs for $108 per year with virtually no heat signature.
100Foot G40 Globe String Lights with Bulbs Outdoor Market Lights for Indoor/Outdoor Commercial Decor, White Wire - 6″ lead with male plug, 12″ spacing between bulbs total length 100 feet, no end-to-end. Commercial quality & great for indoor / outdoor lighting applications great for patios, decks, weddings,garden, tents and parties. 100 feet long string with 100 clear g40 bulbs. Light bulbs have candelabra (e12) socket base.
GE Lighting LED Grow Light for Indoor Plants – BR30 Bulb 9W, Full, Red Reproductive Spectrum for Flowering and Fruiting - Grow light bulbs for indoor plants now you can grow any variety of plants in your home the ge grow plant lights were carefully designed to give your plants the most light with a high output ppf of 15 micromoles per second. The perfect plant grow light bulb for your home show off your indoor garden without harsh or unsightly lighting this indoor plant light bulb provides a pleasing, natural light temperature that integrates well with any decorative aesthetic. Long-lasting, low energy and low heat led plant light the ge grow led plant light bulb for indoor plants features advanced led technology that uses only 9 watts of energy and generates low heat. Grow your plants throughout the year these led grow lights bulbs for indoor plants provide the perfect high-quality, natural light that will allow your indoor garden to bloom and flourish year round. Grow light bulbs with advanced red spectrum for flowers and fruit the ge grow light bulb has a red light spectrum that is perfect for tomatoes, cucumbers, peppers, flowers, fruit trees and pollinators during their fruiting or flowering growth stage.
iPower GLBULBH1000X6 6-pack Hydroponic 1000 Watt Horticulture Flowering Pressure Sodium HPS Grow Light Bulb Lamp, High PAR Enhanced Red and Orange Spectrums CCT 2100K, glass - Extra-low lumen depreciation maintaining over 90% of initial lumen output after running for 5,000 hours. Note allow 3-5 minutes for full bright please wait at least 5 minutes after power shut off before striking again. Special designed for plant growth designed specifically for professional hydroponic plant cultivation cct 2,100k, optimized red & orange spectrum and high par (photosynthetic active radiation) to stimulate flower growth and enhance fruiting. Exceptional bulb life 24,000 hours new long lasting life with a high lumen output and high power efficiency 1 year warranty. High lumen output 140,000 lumens output, compatible with electronic and magnetic ballast, e39 base.
VIVOSUN Hydroponic 4-Pack 1000 Watt Flowering High Pressure Sodium HPS Grow Light Bulb Lamp High PAR Enhanced Red and Orange Spectrums CCT 2100K, Ultra Bright 140,000 Lumens - Optimized red & orange spectrum and high par (photosynthetic active radiation) to stimulate flower growth and enhance fruiting. 1000w vivosun hps bulb compatible with electronic and magnetic ballasts, 140000 lumens, e39 base. Extra-low lumen depreciation maintaining over 90% of initial lumen output after running for 5,000 hours. Startup time allow 2-3 mins for full bright after power off, do please wait at least 5 mins before striking again. Lifetime 24,000 hours.
SANSI 15W LED Grow Light Bulb Full Spectrum Grow Lights for Indoor Plants, Plant Grow Light for Hydroponic Indoor Garden Succulent Veg Flower, E26 Plant Light Bulb Sunlight White, Full Cycle - Easy to install — fits standard e26 socket, just screw into your desk lamp, no special lamp-base necessary recommended coverage area up to 28 square feet mounted 12″-20″ above the plants, lighting time up to 10hrs-12hrs, depends on different plants. Faster and healthier growing — sansi full cycle grow bulbs come with an optical lens, so the light is evenly distributed there is no need to use lamp shade grow light perfectly imitates sunlight, help the plants grow faster (2 weeks make a difference) and better in a healthy way good for plants from seeding stage. What you get — 5-year unlimited warranty 30 days no question asked return policy high quality product 24/7 friendly customer support. Full spectrum — compared with other grow lights, sansi each led chip mixes all wavelengths all wavelengths of light can be fully absorbed by plant photosynthesis without any waste like fluorescent blue-ray (400-499nm) is good for taller and healthy leaf red-ray (600-699nm) is good for blooming and fruits. Great heat dissipation and long life — compared with other grow lights, ceramic body dissipates heat more efficiently than aluminum and is not conductive to electricity, led chips are placed directly onto the ceramic heat sink, both are designed to control noticeable heat, keep your plants from hurt.
3 Pack LED Indoor Plant Grow Light Bulb A19 Bulb, Full Spectrum Plant Light Bulb, 9W E26 Grow Bulb Replace up to 100W, Grow Light for Indoor Plants, Flowers, Greenhouse, Indore Garden, Hydroponic - ☀ Longer lifespan use plastic & aluminium material to build the cooling system support the light working for longer time even work after 24 hours then keep working, no harm to your plants without any issue make a suitable temperature to your plants avergage life of 20000 hours. ☀ Easy to install e26 base fits all standard e26 sockets no necessary to find other fixture to fit this bulb easy install to e26 socket. ☀ wide application perfect for work in greenhous and many indoor environments or for kitchen grow herbs, fruits and vegetables, can use them to growth faster and healther or flowers which suitable growth for indoor. ☀ High performance & energy saving led a19 bulbs deliver 150-degree light outputused high lumen led chips replace to 100w traditional light bulb, and power consumption, energy saving over 85%. ☀ Full specturm:full spectrum light , use 400-740nm wavelength perfect for all growing stages plants for indoor plant receive a more uniform light than single red or blue spectrum light, make your planst grow faster and healthier.
ST19(ST58) Dimmable ETL LED Edison Light Bulb Filament Vintage Classic Light Bulb E26 Base 6.5Watt(60W Equivalent) for Home Restaurant: 3000K,Warm White,810Lumen,CRI>80cri,Screw Clear Glass(8-Pack) - 【Lifespan】 the antique st19(st64) e26 led light is 65w, 810 lumens, 3000k, cri 80+, 25,000 hours average rated life, medium (e26) base it stays at low temperature and has no worry of overheat even used more than 10 hours per day its low degradation and long lifespan effectively reduces frequency of replacing bulbs up to 90% energy saving and 25 times lifespan compared with conventional incandescent lighting bulbs one bulb for a dozen years of use, as long as you don’t break it. 【Multi-function】 this vintage look led bulb is ideal for outdoor lanterns, ceiling fixtures, chandeliers and pendants, multiple places you’d like to decorate with. 【certification, eco-friendly and warranty】 the led filament bulb is etl certificated and approved for damp locations very safe and reliable, eye-protective no lead, mercury, uv or ir radiation if received broken bulbs caused by international logistics and amazon logistics, please contact us(shop xrime) by amazon e-mail, we will send new bulbs to you for free, and feel free to contact to answer all of your questions completely. 【Energy efficient and sustainable】 the 60w conventional filament blub can easily be substituted by 65w vintage style led bulb to have the same amount of light output, but it saves 90% on your electricity bill the secret is the high energy efficient led bulbs hidden inside the retro style squirrel-cage filament the estimated product lifespan is more than 25000 hours, so our led filament bulbs doubles the saving by reducing the cost of frequent bulb replacements. 【Dimmable】 being able to adjust the light brightness means you’re able to create the perfect atmosphere in your room anytime to achieve ideal and smooth dimming effects, we recommend lutron dimmers.
SANSI 15W LED Grow Light Bulb, Daylight White Full Spectrum Grow Lights for Indoor Plants, LED Plant Light Bulbs for Indoor Garden Houseplants, Commercial Hydroponic Horticulture, E26 A21 120V - [Gift for indoor plants] a21 bulb, e26 base fit in lamp sockets easily sansi plant led bulbs are widely applied to hydroponics, greenhouse, farming, growth chamber, plant factory, indoor garden, houseplants, office plants such as fiddle leaf fig, ficus tree, palm tree, succulents, cactus, bonsai, orchid, herbs, lettuce, fruits. [full spectrum] sansi grow bulbs come with an optical lens, so the light is evenly distributed there is no need to use lamp shade unlike other brand’s grow lights which are composed of red chips and blue chips, sansi mixes 380-780nm all wavelengths in every led chip this advanced optical structure ensures more uniform light distribution and more proper spectrum proportion—just like natural white sunlight. [Use and service] recommended coverage area up to 36 square feet mounted 12″-39″ above plants, lighting time 10-12 hrs, depends on different plants average ppfd is 11156 μmol/s/m² based on 197″ above plants 5-year warranty and friendly customer service mean you are covered for replacement or refund should there be any quality issues. [Full cycle] every wavelength is meaningful for plants’ growth (see more wavelength knowledge in description below) sansi led grow bulbs simulate natural sunlight (including uv&ir), giving all spectrum your plants need, beneficial for whole phrase of growth from seed to harvest more practical and easy to use. [Patented technology] unlike other brand’s plant lights which rely on plastic or aluminum heat sink, sansi adopts patented ceramic technology and unique hollow-out structure to improve heat dissipation efficiency, prolonging bulb’s lifetime to 25000 hrs 15w led equivalent to 150w, energy saving, instant on, flicker free, near 5000k.