Good article either way, i’d be interested to see a test based on the above. After a number of fits and starts, GE is finally completely out of the lighting business that was its legacy with Savant Systems acquiring the GE Lighting consumer lamps business unit. When growing a flowering plant, we want them to grow big and strong in the vegetative stage. This means purple LEDs are only half as efficient and white LEDs lag by 25%. Is the green light in the white LED spectrum going to bog it down? Similar to household lighting, you’ll find LED is far more energy efficient than HPS lighting, with a difference of up to 400W. This research equalized technology by testing all the grow lights at the same intensity of light. The LEDs are designed to create a color that is both efficient and conforms to a Kelvin and CRI rating. There are many variables, so lets dig in! This means less cooling of the grow space and a far lower chance of plant burn – especially when it comes to growing in confined spaces. LEDs produce far less waste heat than their HPS and HID counterparts. The HPS ‘Dual Spectrum’ Bulb emits mostly Red and Green with almost no Blue. Really, the purpose of the test wasn’t about energy at all (we’d care about light efficiency metrics then) it’s all about the spectrum and discovering which creates the biggest growth for plants when placing the intensity at an equal level. If you’re going for LED, at least choose something that has a large amount of green or yellow light. You knocked it out of the park. Also, be aware that manufacturer representatives may recommend street lights that are not equal in performance. May your mind think differently about plants and light after this article! Your marketing is compelling. Below are two graphs from a leading purple grow light manufacturer, Kind LED Grow Lights. Keep in mind this light has over 50% red and 10% infrared, most white systems on the market have less than 40% red and 3% infrared. This is the reason our product focuses on a wide spectrum for plants, which is what this article is about, and this product has been tested over and over by growers showing fantastic results in quantity and quality. I know that you have an opinion, I certainly did! Plants with many big leaves and thick stems give us the power and structure needed for the flowering stage to achieve massive yields. Do you have an idea of what could be causing the massive efficiency gain? If we took the simple approach and put one brand of light against another, that isn’t exactly scientific, and actually, won’t tell us much. So I need a little clarity please, are you saying that I can use your lights for both veg and flower despite the fact that you don’t have dimmers? In the table below, you can see how lumens roughly translate into watts according to different types of light bulbs. Light in this color (above 700nm) is called “infrared light”. The high-end home automation outfit could give GE Lighting its spiffiest polish since the bygone days of Jeff Goldblum’s dazzlingly cheesy Terry Quattro character. This must mean there is more to know about photosynthesis than just Chlorophyll absorption. That isn’t the right way to look at this graph. The chairman of LEDvance’s parent MLS will take over as CEO with the departure of Lawrence Lin, while L+B cancels the rescheduled 2020 event, and LRC surveys lighting for health. It’s got a spectrum with plenty of yellow, red, and far-red, which is great for flowering. The Swedish lighting company has reorganized along brand lines in place of geographies. When we’re simply viewing things in the eyes of the plant, only spectrum and light intensity matters. Thanks for this! Why bother buying a kind of light if half of what it emits goes the opposite direction of where you want it to go? For example, comparing the “GrowBoss 400W LED” vs the “HotDawg DE 1000W HPS” light doesn’t help us understand why or what is causing the plants to grow better. Do LED grow lights yield more? I hate to gush, but this type of light technology puts color right where we need it. The shape and curve of the spectrum is d. esigned to affect how our eyes perceive the color. Notice how the HLG 300L Rspec has more relative intensity in the yellow, orange, red area and a little less in the blue. How come there’s no spectrograph representing your full Spectrum? White LEDs are created for human eyes. Without that attention, many specifiers would have remained unaware of these findings. Do you think white LEDs can match the growth performance of HPS? Are they right? They were scored on dozens of criteria after 4 weeks of growth, and a few of them help us understand growth performance: We want high scores in all of these categories at the end of our vegetative cycle. Instead of 1+1 = 2… It’s 1+1 = 3. They compared the lights on identical strains in side-by-side grow rooms. The tomato plant is a fantastic test subject. LED Street Lights The high power LED street lights LU1 are designed for the street lighting demand and fully meets the special requirements of street lighting. But when you factor in the efficiency, maintenance costs, and bulb life of high pressure sodium vs LED, this LED initial cost becomes the only disadvantage as far as we can see. Are they equivalent?How do we conduct the ultimate grow light review? To meet the collector-road lighting criteria, NLPIP found that when compared to HPS, current LED street lights: • can save a modest amount of energy, and, • usually have a greater life cycle cost, with or without the need for new poles. These graphs help clarify exactly the ratio of colors in each spectrum. Since HPS won in every category, it scores 100%. NLPIP analyzed the pole spacing needed for the streetlights to meet a national roadway lighting standard for collector roads, ANSI/IESNA RP-8. Don’t get me wrong, comparisons are valuable, but they are quickly outdated as new technology is introduced. 17,724 x 85% = 15,065.4 mean lamp lumens 3.) My plants almost tripled in size. The report was widely publicized [see links to LEDs Magazine articles under Related Stories at right], but many third-party summaries and interpretations were misleading, so hopefully this article will clarify a few key points. Their discoveries, together, unlock secrets we can use to maximize growth in our gardens with artificial light. Could you please comment what wattage per area unit was used in each of the setups? Got wimpy and small plants in veg? Side by Side Comparison . You’re about to learn something you’re never going to forget, and your plants will thank you! Spectral control and a dimmable feature. There has to be something better out there…. Notice how that as blue light increased, the smaller the leaves became. Every indoor grower Is looking for that perfect spectrum. If you’re completely new to indoor LED grow lights, you might want to check out 7 Myths LED Grow Light Companies Tell You, First of all, it is no question that LEDs are more efficient at creating light than an HPS lamp. Thanks for asking! Different colors of light cause different characteristics to come out in plants. Do plants use only red and blue light? With lack of this information it is actually impossible to answer the question which growing method is most [per watt] efficient, or even to compare them. 2. The comparison categories here are based on what I've learned so far about growing with LEDs and dealing with LED companies. PNNL scientists investigate the potential of a new NEMA ANSI standard to address performance variations that may be found across 0-10V dimming controls for outdoor LED luminaires. In many ways the LRC is grateful for the attention given to this report, because the overarching goal of NLPIP is to provide objective information to those specifiers. Generic comparison between HPS lights and LED lights. If you can handle taller plants in your grow setup, the HPS provided the biggest leaves, heaviest structure, and the most flower buds — a surefire winner for the vegetative growth of the tomato leading to a bountiful flowering harvest. Check out the results below. These are the key areas for photosynthesis POWER! Mai 29, 2015. LED Outdoor Area Lighting Fact Sheet. All skepticisms were put to rest as the weeks passed. The difference between led vs hps lumens per watt is greater because there's less "loss" of light. Use the S/P ratio chart to select the S/P ratio for the LED wall pack. HPS is generally shunned for vegetative growth because of a low amount of blue, so plants can get a bit stretchy. Each LED only outputs a small range of color. adroll_current_page = "other"; adroll_currency = "USD"; You’re going to have disappointing results come harvest time. But did you forget to mention the power ratings of the light sources you tested? The High-Pressure Sodium bulb originated in the 1970’s and became ubiquitous in street and warehouse lighting. HPS lights have been associated with high yields for a long time. I and my friends are impressed. Armed with this knowledge we can grow better plants in our own homes using the latest science! LEDs will always beat HPS on a light meter…. So everything is dry now and the here are the LED plants. I hope you learned something. Are plants going to grow weak and lanky in veg? Sodium vapor bulbs contain metals that are evaporated into inert gas within the glass casing while LEDs are a solid state technology. The Full Spectrum LED and the CMH have similar proportions of Blue, Green and Red to the Sun. This spells some trouble for those of us out there who have already purchased LED systems… up to. SolarSystem 1100 LED vs. HPS: The Results. Keep at it… as technology and prices are always changing. Qualitative Comparison Between LED and LPS/HPS What’s the Difference Between Sodium Vapor and LED Lights? 5 Barriers to LED Grow Light Domination – HPS vs LED Grow Lights. I love the results and the low heat. I am limited to an 8′ ceiling and usually control any height issues with netting. HPS to LED Conversions – “Lessons Learned” 1. As for the Purple Grow lights id love to see the specifics on the led (spectrum of nm for each), every proper grow led should use Royal blues and Deep red’s. 32 tomato plants per light source were tested in this study, and were grafted from clones for consistency. MAURY WRIGHT considers the shifting strategies in how product branding is utilized in the contemporary solid-state lighting sector. This study is not factoring in how efficient each source is at creating light. 32 plants were used for each spectrum, which means this is a very accurate test. There are a lot of factors to consider: temperature, distance, humidity, water, nutrients, strain, grower experience…. The Lighting Research Center’s National Lighting Product Information Program (NLPIP) formally performed an “apples-to-apples” evaluation of existing street-lighting technologies as detailed in its September 2010 publication. By running a 2000 watt load for 1 hour, 2 kilowatt hours of electricity have been consumed. Manufacturers that use these LEDs often say that they are efficient because they match the “McCree PAR graph” or “fit inside the HPS graph”. So this study did not consider wattage at all, it equalized the output to the same light intensity for each light source and distances: here. The Lighting Energy Alliance at the Lighting Research Center was behind new research findings that suggest uniformity of lighting is more important than light levels for parking lot safety. Yes, it’s true, previous purple and white LED systems not only leave out colors that plants need, but many systems were actually just about as efficient as HPS/CMH… until about 1-2 years ago. Below are two graphs from a leading purple grow light manufacturer, A phosphor spreads light across many colors like a prism. Are you surprised? McCree put a leaf in a special growth chamber and gave it a single wavelength, and measured the result. Since HPS won in every category, it scores 100%. Stay tuned! This is especially true if you opt for more modern rigs, as they are likely to have even higher savings. This group also holds a belief that blue is for vegetative and red is for flower. Both purple and white LED manufacturers point to valid scientific graphs relating to plants… who will win? If you do a quick search in Google for “LED light burn”, you’ll see horror stories… this is one reason why. Huge advancements in this technology allow for a very efficient LED that can produce a rainbow of colors (unlike narrowband LEDs) by using a “phosphor”. So it’s best we avoid older narrowband technology and focus on creating a continuous band of light in the red and infrared range. SSL coronavirus news: LIA reports on survey, Cooper Lighting closes maquiladora. Meet with Finance / Budget staff as well as Council members during the initial and final phases of the conversion plan proposal process. In fact, you should be waiting until your plant becomes a certain size and strength before flowering, so if your growth spectrum isn’t helping you achieve that goal, think of the time you are wasting! Customer for life!!! Okay, so we really want infrared in our spectrum. Now…on to our contenders. Does the graph above even match the HPS spectrum? Before we breakdown the contenders, let’s talk about the current reigning champion. Coronavirus wipes out Q1 profits at Fagerhult. Growing Seedshop. To make a simple comparison – a 600 watt HPS light yields up to 300 grams for the space its light covers, which translates into half a gram for each watt. NLPIP recently performed a formal evaluation of existing street-lighting technologies to determine the best choice between LEDs and HPS. How will it do in vegetative growth? Some HPS bulbs contain enhanced blue or other small spectrum changes, but at the end of the day, an HPS is an HPS. LED. Maybe on the tight and bushy side? Last updated : Septembre 29, 2020. There are multiple layers of biological light receptors within a plant – they are complicated, living beings that sense for light, Did you think that blue light would have assisted vegetative growth? Wait a second, I’m sorry, the graph above was actually the old narrowband LED. While these LEDs are not rated nor designed for plants, some growers have found that they perform well because they provide a wide spectrum of light, not only red and blue. A phosphor spreads light across many colors like a prism. You are almost ready to shop! In Depth comparison for high efficiency Horticulture Lamps. I agree. To dim or not to dim: Why is that still a difficult question? No matter how far technology advances, plants remain constant and react to light the same from day to day. This spells some trouble for those of us out there who have already purchased LED systems… up to 100% more light from LED may be required to achieve the same results as HPS. This LED technology allows us to attain the results of HPS at the same intensity. The report concluded that, on average, the recommended LED streetlights could use up to 10% less power, however, their life-cycle costs were higher. Below is the famous “McCree Curve”, the version found in the original scientific paper by Dr. McCree: The White LED seems to fit in the same shape as this curve and “match” it. How about that white LED? To get you more familiar with LED grow light spectral charts for different phases of growth, below we have the HLG 300L Rspec (flowering phase/full cycle) and Bspec (vegetative phase) so you can compare them. Thanks for the note! LED grow lights… I really, really want LED grow lights to work for me! I have been a big proponent of LED's. Lampes De Culture : Led Vs. Hps. These claims are echoed by others in the industry. I have a surprise for you… this scientific study also tested new, emerging LED technology. The two different technologies are entirely different methods of producing light. These “narrowband” LEDs are the oldest LED technology, developed in the 1990’s, and are still in use today. The LEDs have become more efficient. Top 5 – Outdoor lighting takes the spotlight. So 20 grams more than the LED. The shape and curve of the spectrum is designed to affect how our eyes perceive the color. © 2020 Endeavor Business Media, LLC. The Red/Blue LED has approximately 4 times more Red than Blue and almost no Green. For you HPS growers out there, it remains the king! This is merely a demonstration of how much spectrum is important for plant growth! Hey, I would like to repeat the question about wattage. With more than 40% reduction in consumption, you’ll be able to experience more long-term savings with LED lighting. I don’t know if you can tell from the pics because I squeezed the bag some, but the buds are looser and the bag is much fuller proportionally. What you’ll discover is that colors and their combinations significantly affect how plants grow. The first man, Dr. McCree, observed and recorded what is known as the McCree PAR Graph: Many people look at this graph and draw the conclusion that plants do not use light above 700nm. Shorter lifespan: HPS lights only last 2.5 years or so in comparison to the decade or more life of an LED. LED ou HPS, c'est un vieux débat, alors plongeons-y et regardons les avantages et inconvénients des deux solutions. It is an inevitable fact that once you get keen on the growing business, you will immerse yourself into the focus of which is the best grow lights. Grow Light Height from Seedlings, Clones, Plants. Our light does come with a dimmer and adjustable straps making it very easy to adjust to your specific grow space and needs. There is no way around it. Now we have compact fluorescent lamps (CFL) and light emitting diodes or LED for short. LED vs Metal Halide What are LEDs? This product adopt the high power LED as the light source, using dozens of high power DMX Emitters of 1 watt LED. It gets even more confusing since factions for either Led or HPSclaim that the light works best for their cannabis plants. Still, if there’s one truth about LEDs, the HPS has a better lighting spectrum, which makes it just as effective, especially when considering the surface area. Plants need a robust, strong, and large structure to gain momentum for explosive growth in flower. Some other energy-saving advantages of switching to LED lighting include: However, is it a myth that HPS shouldn’t be used in vegetative growth because of its spectrum? With newer LEDs, you get to have more yields, thanks to a better PAR delivery. The difference was startling! A recent addendum to the original report examined LED street lights that could match the pole spacing provided by incumbent 150W HPS street lights. To emulate the streetlight selection process used by typical specifiers, NLPIP purchased and analyzed eight LED streetlights that were recommended by manufacturer representatives as equivalent to an incumbent technology, namely a 150W HPS streetlight with a Type III distribution. Will it stand up to the science of LED? adroll_language = "en_US"; If you’re completely new to indoor LED grow lights, you might want to check out, You’ve seen the side-by-side grows on YouTube, however, they are often, For example, comparing the “GrowBoss 400W LED” vs the “HotDawg DE 1000W HPS” light doesn’t help us understand, HPS bulbs simply come in different wattage sizes. Ketra supplied lamps and luminaires to The Lodge at Gulf State Park that deliver functional lighting for humans and that don’t interfere with hatchling turtles on the Alabama coast from making it safely to the ocean. Other than helping lower the electric bills; most LED bulbs are also dimmable and don’t contain any Mercury.Choose the Right BulbCheck the conversion chart to figure out the best bulb you need to replace old ones. Now, we might want to add a tiny bit more blue to the spectrum to help with stretching. What we need to know is what type of light is actually best for plant growth. Before making the conclusion which is betterLED vs HPSgrow lights, it is important to explore deeper into factors like growth stages, room to grow, efficiency and ease of use … Here comes the king! But, there’s a reason why some of the largest commercial grow operations have made the switch to LED. Those are some interesting results. White LEDs will always try to maximize green and yellow light, because those are the colors that appear brightest to human eyes. Environmental hazard: When you dispose of HPS lights, you can't just throw them in the trash like you would an LED. Here are the spectrum compositions that were used in the laboratory test. My friends grows always far exceeded mine. Comparing Efficiency, output and performance for HLG 650R vs HLG 550 Rspec Commercial LED Grow Lamp. Much to NLPIP’s surprise, all six of the LED manufacturer representatives recommended streetlights with lower light output than the incumbent HPS technology. If you’re a data person, check out the results table below: To this day, even after analyzing this particular study for over a year, I can’t get over how spectrum caused such a difference in performance! If we wanted to understand electrical efficiency, then watts matter. When we’re talking about photobiology, it’s important to work off of percentages and color ratios. Thread starter Veghead; Start date May 11, 2016; May 11, 2016 #1 Veghead New Member. Blurple LED manufacturers claim that plants mainly use red and blue light because that is what Chlorophyll A/B pigments absorb. GE sells GE Lighting lamps business to Savant Systems. The more lumens a light bulb produces, the brighter it shines. They seem like they would be the best of all grow lights for growing cannabis – they’re low on energy, low on heat, and also they just look cool! Comparison Chart HPS vs. Check them out here. The green “line” is a white LED, the rainbow outline is the spectrum of a High-Pressure Sodium bulb. Actually, plants don’t understand “watts” they understand light output (aka, umol/J). However, we can only do this to a point before yields start to diminish. This also means that more light from LED is needed to achieve the same results as HPS. Your email address will not be published. In some cases, The McCree Curve as found in – “THE ACTION SPECTRUM, ABSORPTANCE AND QUANTUM YIELD OF PHOTOSYNTHESIS IN CROP PLANTS”, That’s right, the amount of photosynthesis jumps by 50%. First off thank you for the information, loved it. Other days it looks like HPS is outdated after the next bulb swap. Check out the study linked in the article, it goes over the energy sources. The graph does show little effectiveness above 700nm… That must mean infrared light has little to do with photosynthesis, right? 3xES300s in a 5×5, two weeks in and have never seen anything like it. Overall the benefit of led (besides heat and energy usage) is the individual nanometer or narrow spectrum which can be used to create a perfect grow light as well as full control on the spectrum via controller and dimming if required. 3. What do you think? This means we rule out the many factors that change from brand to brand. Nice, big frosty buds and plenty of weight. For instance, the LED grow lights are 48% more efficient than the HPS. Specifier Reports: Streetlights for Collector Roads, third-party summaries and interpretations were misleading, Fagerhult quarter declines as factories reopen and IoT development picks up, Crossroads LED lighting at Santa Fe’s Railyard District demonstrates SSL reliability, Signify CEO reports strong demand for UV-C but refrains from quantifying sales, LED rings floating above DC Wharf plaza invite visitors to merchants, Outdoor SSL news: Ameresco supplies Oregon, Signify connects New York, SALC sets digital dates (UPDATED), Lighting brand value plummets in changing SSL landscape (MAGAZINE). One kilowatt hour is equal to running a 1000 watt load for one hour. LED Vs HPS Grow Lights comparison with regards to; LED business news: LEDvance has another new CEO; L+B, LRC, and DOE. HPS vs LED wattage. Hi Pierre, the study is linked to in the article and it contains all of the color ratio information that you’re looking for. Our collective knowledge has this fact confused, so it’s important for you to understand how to interpret this graph correctly. “Kelvin” (Color Temperature) and “CRI” (Color Accuracy) are two metrics that white LEDs will always abide by. (3000/3500K vs 6500K vs 7500K). But what we haven’t seen is the definitively better growth performance from LED grow lights, even at wattages that are nearly the same. The lightbulb lumens to wattage chart below will help you understand which LED bulb is comparable to your current incandescent bulb. Some questions. Our Electric Sky LED Grow Lights adopt this new & groundbreaking technology in a special spectrum tuned for ultimate flowering plant performance. The only references to … Pingback: Electric Sky LEDs: The Next Generation of Grow Technology? adroll_pix_id = "JRXWOCGCWZERXFBFT4FKYW"; Instead of 1+1 = 2… It’s 1+1 =, Wait a second, I’m sorry, the graph above was actually the old, Oversaturation of the top leaf tissue, leading to light burn, HPS vs LED Grow Lights: The Spectrum Efficiency Showdown. When looking at a spectrum, so plants can get a bit stretchy simply viewing things in results... The article, it remains the king to me lighting group reports an SEK 16.6 million loss as prompted. Guidance on LED area lighting intended to enhance safety ( UPDATED ) HLG... The article, it ’ s a reason why HPS is generally shunned for vegetative?. This bulb for plant growth big frosty buds and plenty of yellow, red, are. The study linked in the same environment has when it is hard to put together a test! Means we rule out the study linked in the white LED lights — yellow/green... 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