Finding the Best Full Spectrum LED Grow Light
If you have been reading our site for any length of time, then you know that LED Full Spectrum grow lights are special light lamps that simulate the sun’s rays. The best full spectrum light for an outdoor grower is obviously the sun. But for an indoor grower, sunlight is sometimes not an option. We think LED grow lights can help you grow marijuana faster than any other indoor lighting methods. However, figuring out which LED lights work best for your situation can be a bit confusing because there are many lighting options to choose from.
Lights that are full-spectrum have recently become available at reasonable prices. These lights mimic the sun’s light spectrum but often add some extra light in the ranges of wavelength that are important for growing marijuana. We have done the work to pick out the best Full Spectrum lights so we’ll help you to choose the best LED grow light for your needs.
Color is an Important Factor
Sunlight is not made up of just one color. Instead, it has a full spectrum of colors which is the reason we see rainbows when it rains and the sun peeks through (but that is a conversation for another day). At any rate, the colors range from red, yellow to blue and violet, and plants use this full spectrum to create the photosynthesis they need. The red and blue lights are the most critical for plants. Some people argue that full spectrum LED lights are better because they make sure that your plant gets all the wavelengths that are present in natural light. Other wavelengths besides red and blue, according to the argument, are also beneficial for certain aspects of plant growth.
Intensity also Plays a Factor
The intensity of the light that a plant receives is conventionally marked by the wattage of the bulbs, and by how close you place the lamp to the plant. Plants differ in their need for certain colors but also in their need for light intensity depending on their growth stage. Unlike shade plants, marijuana plants require high levels of sunlight. Equally, when grown indoors, they need high intensity LED lights.
However, these lighting needs will change over the lifespan of the plant. For example, early stage germination of marijuana does not need light. However, once you have early stage sprouts, you’ll need to start using the lamps for about 18 hours, whereas flowering stages only require 12 hours of lighting. MaryJane Farmer has an article about the best light recipes for various stages of growth.
Once your plants hit the flowering stage, you can determine the sex of the plants and separate the males from the females. Remember, you cannot smoke males as these buds are only good for pollination.
How to Choose LED Lights
A good rule of thumb is to use 30-50 watts for each square foot of growing space, especially on cannabis plants that are flowering. So if you have a growing space of about 16 square ft you would want to purchase a grow light of about 550 Watts. That is if we assume that your plans are all in a single area. However, plants that are still in the vegetative state only need about half of this amount of light.
It is important to note that wattage is only a very rough measure of a light’s effectiveness. The more important measure is PAR value and particularly the Daily Light Integral. MaryJane Farmer explains what that means in this article, but suffice to say that you should never buy a light without looking at the chart of PAR values that the manufacturer should include in the product description. Here is what a PAR value chart looks like.
Deciding on the type of grow space lights can be a challenge, as there are so many types and kinds to choose from. That is why we list a few different LED light options to help you start your new project. While Viparspectra is becoming a well known name for cheap LED grow lights, the others featured below might not yet have caught your attention.
Affordable Full Spectrum Grow Lights
While starting a project of growing marijuana indoors doesn’t seem like too complicated a project, if you’re going to create nice sized cannabis plants then you need a little beforehand preparation.
VIPARSPECTRA 1200W Full Spectrum LED Grow Light
- 【UL Certified】Lighting SAFETY is just as important as EFFICIENCY. The V1200 as a whole is UL Certified. It meets UL rigorous testings and safety standards to ensure safe operation. NO DANGER! VIPARSPECTRA is a trusted brand in the lighting industry by providing the best customer care with quality and safe products.
- 【Optimal Spectrum】 The secret to VIPARSPECTRA’s success is optimal full spectrum lighting which provides plants in all stages from veg to flower with everything they need in the natural sunlight. This results in bigger buds and higher yield all while saving you on energy costs.
- 【VEG & BLOOM Double Channel】The VEG channel includes mainly blue and white LED, which is needed for germinating seedlings and promoting early vegetation cycle. The BLOOM channel provides more red wavelengths which is important for plants in the flowering and fruiting stage. VEG and BLOOM switches can be used together to obtain maximum growth performance throughout the seedling and flowering stage of your plant cycle. The light can replace a traditional 800W HPS/MH lamp while consuming only 520W.
- 【Coverage area & Hanging height】The light is perfect for a 4.5’x4.5’ vegetative coverage at 32”and 3.5’x3.5’ flowering coverage at 24”. We recommend hanging the light at 32"-44" and running the lights 18 hours per day during the vegetation stage. During the flowering and fruiting stage, hang the light at 24"-28" while running 12 hours per day with both VEG and BLOOM switches. Remember to properly adjust the height of your light accordingly to your plant desired level for optimal growth.
- 【Worry-free 3 Years US warranty】We are a professional manufacturer who specializes in LED grow lights for many years. Product quality and professional customer service are always our top concern. We offer 3 Year local warranty and 30 days money back guarantee. If you have any questions, please feel free to contact us. We will offer you professional guidance to help you and your plants grow better.
Okay, so you don’t need a lighting system with more than a thousand watts, which is what the Viparspectra has. It is a system that includes a full spectrum of lights for your cannabis plants, which means it provides light energy (wavelengths) for all growth stages of the plant. All you need to do is adjust the amount of light exposure the plants get during the different growth stages. In the end, this LED light option improves on older types of lights like fluorescents and HID, as there is no need to change out LED lamps when the plants mature.
Unlike other systems, this LED light lamp offers a way of turning off certain spectrum colors at different growth stages, and it is this feature that allows you to better control the growth between vegetative and flowering stages. While the Viparspectra is rated at 1200W, that does not mean it draws this much energy from the electricity. It just means that this is the wattage of HID lamp it can replace. This system only consumes an average of about 500W of power but produces the same lighting for your plants as a 1200 watts HPS light.
The Viparspectra has an integrated cooling system which keeps the lamp cool at all times. There are six separate cooling fans built into the tray. This is a very impressive feature as most LED lamps come with less cooling power. For additional temperature control and LED chip longevity, we also see aluminum heat sinks, which further dissipate the heat produced by the lamp, affording a more durable LED lamp system. It is very versatile as it offers a much needed feature that other lamps just don’t have, and is the reason for the upper range in price. Warranty Coverage is also excellent here as this LED lighting system offers a three-year warranty.
BESTVA 2000W Double Chips LED Grow Light Full Spectrum
- 【BESTVA Newest Technology】Dual-chip(10W) LEDs which is much brighter and more efficient than traditional 3W and 5W LEDs. It is the HIGHEST PAR/LUMEN OUTPUT PER WATT
- 【VEG & BLOOM Switches】Nine different bands of LEDs make up our true full spectrum light, which helps plants, vegetables and flower indoor growing at all stages, just like in the natural sunshine. VEG for growing, BLOOM for seedling / flowering, we recommend lighting for 12-18 hours a day. If your plant needs more energy, please turn on both switches together
- 【Powerful Cooling System】We use a 3mm thickness aluminum plate radiator for better heat dissipation. Holes on the aluminum plate and the glass make heat convection, run 50~60℉ lower than any other LEDs
- 【Core Coverage Area】Compare to 1400 watt HPS while consuming only 390 watts! Twice effective coverage area than any Reflector Series lights, perfect for a 7.8' x 7.5' growing area at 24" height. Avoid Daisy Chain, Dangerous First & Energy overlap causes waste
- 【3 years warranty】Plus 90 days satisfaction or return guarantee. We are so confident in our products' quality control, if any question pls contact us, we will offer you professional guidance to help your plants grow better
The Bestva system is a 2000 watt COB grow light. This high-tech innovation could make this one of the best LED light panels for growing cannabis. COB stands for Chip On Board, and it is the technology that keeps the LED panel cooler than in other lighting systems. The COB system on this lamp offers a large number of chips with well placed soldered points which give the light durability but less heat. The more solder points on a lamp the hotter it will run.
This offers a full-spectrum LED lamp safe for all plant stages. It covers an area of about 4×4 and a height of about 6.5 feet. You can’t beat this LED light system for durability either as it comes with a lifetime use of about 50,000 hours which is about 5 years of 24 hour use and substantial warranty of 3 years.
So if you have a mid-sized budget, and a smaller grow tent, the Bestva 2000 will do the trick. Again, although this system offers an output of 2,000 watts HID equivalent, it does not draw that much energy from the electricity. Amazingly, it only consumes about 390 watts.
Cheaper and Smaller
- Reasonable Spectral Ratio and Upgraded Dual-Chip: Roleadro 600w led grow light has 84 full-spectrum reflectors and 12 blue spectral reflectors form a reasonable spectrum. This design can ensure the most useful spectrum for plants growing in all stage and the blue spectrum can maximum the speed of leaves growing. 2 chips in each reflector for enhanced light intensity.
- White Flame-Retardant Plastic Case & 60° Reflector Cup: This light is made of a white flame-retardant casing, and the appearance is beautiful, generous and simple. It is safe and reliable in use. 60° reflector cup to perfectly reflect all dispersed light on plants, effectively reduces light loss compared to traditional lumen beads, and the illumination area and brightness level can be increased.
- Convenient Daisy Chain: 2-3 lights can be chained in a line, space saving and keep grow tent tidy, more convenient and safer in use.
- Efficient Heat Dissipation and Quiet: High-quality fans and aluminum heat sinks ensure efficient heat dissipation and extend life. The lower noise makes it not affect your life.
- Reliable Warranty and Professional Service: 12 months warranty and 30 days money back guarantee. Any questions, please email us, we will got a reply within 24 hours. We always stand behind and assist you.
- 300W LED WITH THE MOST PUNCH: VIVOSUN's full-spectrum 300W LEDs deliver optimal light-spectrum coverage, more power for bloom, maximum PAR output at various distances, and super-bright lights that your plants will love
- EXCELLENT PENETRATION IN TENTS & GROW HOUSES: Floods 2'x2' targets in intense light for monstrous vegetative growth at height of 24" and 1.5'x1.5' targets for incredible blooms at height of 18" that penetrate through your top canopy
- COOL, QUIET & EFFICIENT: With a built-in large 5" cooling fan, VIVOSUN's professionally designed composite-metal grow light runs at proper temperature and consume only 135 Watts to produce your best, most energy-efficient harvest ever
- LONG LIFESPAN: Exclusive VIVOSUN design and composite-metal robust casing dissipates more heat than conventional LED grow lights, through the top and all 4 sides of the unit, extending the light's lifespan to an estimated 100,000 working hours
- GUARANTEED QUALITY & RESULTS: VIVOSUN guarantees your satisfaction in veg growth and flowering, backing our confidence with a 3-year warranty and 30-day hassle-free return guarantee
- ❤️ FULL SPECTRUM: 225 high quality super bright LEDs with spectrum 390nm-730nm, including UV IR Red Blue. Plants can get the spectrum they most desire from this grow light and it’s suitable for all stages of growth such as seeding, germination, vegetative & flowering.
- ❤️ WIDE APPLICATIONS: Widely used for grow tent, grow box, grow chamber, grow room, hydroponics, aquaponics, greenhouse, vertical farm, indoor gardening and so on. It is suitable for almost all the plants, such as herbs, succulents, vegetables, bonsai tree, houseplant, orchid, lemon, chili, tomatoes, algae etc.
- ❤️ ENERGY-SAVING: Max. Power 45W, Avg. Power 15W, replace 50W HPS or HID grow light with only 15W consumption. Good for 2’x2’ growing space.
- ❤️ USER FRIENDLY: ABS material in square shape with air-flowing construction, excellent cooling capacity with no fans no noise. Easy set-up, whole plant light can be assembled by hands, no need extra tools.
- ❤️ WORRY-FREE WARRANTY: 12 months warranty plus 30 days satisfaction or return guarantee, 100% money back. Contact us first if any issues and we will make it OK.
- 【Veg/Bloom switch】: Through a wide plant growth testing, the Veg/Bloom switch, was designed to provide proper light for plants in different growth stages to greatly increase your harvest. Veg switch is the blue LED and white LED only used for seed or seedling growth; Bloom switch is the red LED and white LED. For flowering, both Veg and Bloom switches can be used.
- 【Full spectrum】: KingLED LED grow light provides full spectrum lighting from 380 nm to 780 nm (including UV + IR) of natural light for plants needed of all growing stages from vegetables to flowers.
- 【Energy-saving technology】: Different from the traditional HPS ,Our LED plant grow lamp adopts a high-tech LED chip(double-chip 10W LED),Our 1000w LED lamp can replace the traditional 600w HPS to provide brighter light and save more electricity which also can save a lot of money for you.
- 【Advanced cooling system】: Multiple high-speed mute fans and upgraded aluminum radiators enable the light bulb to work at 50°F to 60°F that is lower than other lamps. In a lower temperatures, your plant won’t be burned which could increase your lighting time and promote plant growth.
- 【Professional Service】:3 years Professional Service and free return for 90 days. KingLED Laboratory has more than five years of sales with after-sale service team professional in design, sales and production for the best products and service for the majority of customers. If you have any questions, please contact us at any time, and we will reply within 24 hours and give you a satisfactory result.
This King LED Full spectrum light has double LED chips which purportedly are more efficient than single chip LED. It also has a cooling system that keeps it significantly cooler than other lights, again for greater efficiency and cost savings. One drawback mentioned is that the light footprint on the edges is poorer than expected, although some users report good results in a 3’x3′ tent.
Things to Keep In Mind
With the average LED light, some people have said you can expect to get about .05g of pot bud per watt. However, your yield per watt is going to vary widely with changes in technique, different strains, and your experience. So take that figure with a huge grain of salt (or pot, if you prefer.)
Modern LED panels have wide spectrums of light and make for healthier plants, and manufacturers have developed LED focal lenses that point as much light as possible at the plant and increase full spectrum light penetration. However, be sure to look at the light footprint and the PAR value chart when comparing lights.
LED Lighting and Light Footprint
LEDs offer less energy consumption and give off less heat, so they won’t burn the plants when they are kept at appropriate heights. Unlike their similarly cool-running predecessor, the CFL light, LEDs are very intense so do need to be set at a higher level from the plants. But that makes these lamps a better option when you need more plant coverage.
A general rule of thumb is to keep LED grow lights about 12 to 18 inches from the tops of the cannabis plants. This height helps prevent burning but also spreads out the coverage. As you will see from looking at PAR value, more spread out coverage means that you have less light energy at the edges of the light footprint, and thus plants on the periphery are likely to grow less strongly than plants directly under the light.
Last Word From MaryJane Farmer
I have several resources for growers, from beginners to experienced farmers. Everything is listed and described in the Map of Everything here. In addition, for beginners, I have a downloadable free ebook, which is available here.
Send me suggestions, questions or criticisms below in the comments. I would love to hear from you. And send your photos too. MaryJane@420Beginner.com
Last update on 2020-11-25 / Affiliate links / Images from Amazon Product Advertising API
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