The technology pays the investor back over time (the payback period). Why not compare a double ended his / mh . Stouch Lighting Services, HPS bulbs typically emit 80% of their original rated output at the end of life (around 24,000 hours). At the time this article was originally written, we were getting a lot of questions about the differences between HPS and LED, but not really about neon. LEDs can be extremely small (less than 2mm in some cases) and they can be scaled to a much larger size. Most values for LED system efficiency fall above 50 lumens/watt. Energy saving lamps have high luminous efficacy (more lumens per watt). Since then they have gradually expanded their applications to include traffic lights, lighted signs, and more recently, indoor and outdoor lighting. Outdoor Lighting, Commercial Lighting, HPS lighting is best used during the flowering stage of a plant’s growth cycle. In conclusion, the choice of grow light out of HPS vs LED is yours. For this reason it is safest to break sodium lights under water and then to subsequently dispose of the destroyed bulb. The sodium can catch fire even in the event that the lamp is broken on the ground. Your email address will not be published. LPS or HPS lights will still likely need to be purchased several times and the associated labor costs will need to be paid in order to attain the equivalent lifespan of a single LED light. Additionally, there are serious waste disposal issues with sodium lamps. They are a bit blue for flowering, but is just happens that I have a strip LED with 12 x 2 watt pure 660nm wavelength, which I am hanging between the two flood lights. There are many variables, so lets dig in! Currently, the highest-performing HPS bulbs produce around 150 lm/W. All the pro grows use HPS. Typical lifespan values for an HPS bulb are around 24,000 hours. Much like fluorescent lights, modern LED lights are a wonderful solution for gymnasiums, warehouses, schools and commercial buildings. Retail Lighting, LED has virtually zero maintenance costs and the frequency with which bulbs have to be changed out is by far the best on the market. For “no fuss”, one lighting system should be chosen. Under a single light, the PAR value can change considerably from the space directly below the light, to the perimeters of the light’s reach. High pressure sodium (HPS) lights have been the heavyweight champion of the lighting world for decades now, with other lighting systems making only minor challenges to their supremacy. Although sodium vapor lighting beats virtually every other technology in terms of energy efficiency (which is why it was chosen to illuminate the streets of so many cities), it loses out to LEDs. By dividing 860 by 60 watts you can calculate that for each watt of power it uses, the bulb gives out 14.3 lm/W. Led equivalents to 400w and 600w Hps would also be Leds’ which draw those same wattages direct from the wall. Using the table, we can see the mean lamp lumen output for our customer’s 250w high pressure sodium wall pack is 27,000 lumens. If I had more space and LEDs (those big, professional ones) were at the same price level as HPS, I would instantly get those instead. This is especially true of those bulbs in linear tubes. That's almost a 33 percent efficiency increase over the efficiency of the spiral CFL from GE. For LED grow lights, lm/W is generally considered less meaningful than the PAR output. LEDs are solid state lights (SSLs) that are difficult to damage with physical shocks. I go for LED lighting. What has your experience been with lighting systems and which one do you prefer? I moved into a new house in a neighborhood where the houses were close together, and needed a “closed” system that did not need to be air conditioned. at certain voltages, current levels, or light intensities). We have covered this question in past posts on our blog, like this one by our very own head of marketing: LEDs vs Traditional Lighting but most cannabis growers know that this crop is different than most and many growers have experimented with lighting technologies on a small scale to find they can sometimes increase terpenes and THC levels just by changing their light sources. We couldn’t find any objective data on fluorescent bulb performance in high temperature situations. LEDs fail by dimming gradually over time. I’ve taken a bit of a closer look into this topic. Lifespans are variable but typical values range from 25,000 hours to 200,000 hours or more before a lamp or fixture requires replacement. Generally they are cheap compared to LEDs ($5-$10 for a 100W incandescent-equivalent LPS or HPS bulb). 200-watt HPS bulbs provide about 22000 lumens of light. The extremely low maintenance and replacement costs with LEDs is actually a major cost benefit over the long term. The mercury inside the bulbs is a hazardous material that can present a waste disposal issue at the end of light’s life. When current passes through the semiconductor material the device emits visible light. LEDs are an ideal light for purposely turning on and off because they respond rather instantaneously (there is no warm up or cool down period). We also talk about the different times that different spectrums may be used, and the different ways this can affect yield. This is because the spectrum of light emitted is conducive to flower production. LEDs are very efficient relative to every lighting type on the market. The spectrum of visible emissions from an LPS light is actually very close together (589 and 589.6 nm, virtually monochromatic) resulting in the colors of illuminated objects being nearly indistinguishable. Which source do you recommend?” These are questions people ask me almost on a daily basis. Typically, growers begin a grow cycle with fewer lights. Where LEDs really shine, however, is in their system efficiency (the amount of light that actually reaches the target area after all losses are accounted for). Hi all, very interesting information.. but all this ‘lumens and PAR’ lingo has gone in one ear and straight out of the other! However, it is generally accepted that the most reputable vendors include both lm/W and the PAR output. This is thought to be beneficial to plant growth, and modern LEDS often incorporate white along with reds and purples of the visible spectrum. While your actual use may vary, the dollar amount noted will give you a good baseline. Required fields are marked *. LEPs are often sold as full-spectrum and the closest approximation to daylight of any indoor light, but the spectrum is limited by the composition of the gases inside the chamber. Our value engineering service can help.). Foot candle is a measure that describes the amount of light reaching a specified surface area as opposed to the total amount of light coming from a source (luminous flux). Where LEDs really shine, however, is in their system efficiency (the amount of light that actually reaches the target area after all losses are accounted for). That could easily ruin your eyesight, so you need to be really careful. LEDs have an extremely long lifespan relative to every other lighting technology. Lastly, HPS and LPS lights are monochromatic, so they can mess with your color vision if you look at them for an extended period of time. Both technologies are very efficient. Sensi Seeds therefore strongly advises you to check your local laws and regulations. It has revolutionized the lighting industry. Snow falling on traditional lights like HID will melt when it comes into contact with the light. Generally they exhibit an end-of-life phenomenon known as cycling where the lamp goes on and off without human input prior to eventually failing entirely. Both LEDs and sodium vapor lights emit electromagnetic radiation across a small portion of the visible light spectrum, however, LEDs waste much less energy producing waste heat and they also provide an incredibly better variety of high color rendering index options to the user (thus eliminating the monochromatic black appearance of objects illuminated by LPS and HPS bulbs). Although previously seldom the case, newer HPS lights are now beginning to include PAR output ratings. This causes light to be emitted, the colour of which varies according to the material used. Typical source efficiency ranges 37 and 120 lumens/watt. In other words, if you’re not looking for a warm deep yellow light, you’re going to have to use something besides Low or High Pressure Sodium to achieve it. It is only recently with the advent of affordable and prevalent LED lighting that they are being consistently surpassed in terms of energy efficiency and lifespan. In a 90X90X160 cm tent, I got very decent harvests of 100-300 gr per plant (many different varieties, with differing sizes and yield potential – white label’s northern lights auto gave me 110 gr each of the two plants I grew). When looking at those numbers it may not seem like a very big difference. As you can see, although the LED fixture has fewer lumens than the HPS fixture, the LED light emits 4x more visible light, making it brighter. The scotopic lumens provided by each light source would then be the following: LED scotopic lumens = 12,000 lm x 2.0 = 24,000 lm HPS scotopic lumens = 40,000 lm x 0.5 = 20,000 lm. Were you satisfied with the results from HPS? Correlated Color Temperature (read more here). By far the most efficient HID variant is the Low Pressure Sodium lamp whose source efficiency can range from 60-190 lumens/watt. 2. For example, Lumatek’s 600W bulbs have a PAR output of 1,030 µmol/s. If so, using methods like the Scrog method would mean I would need less wattage for penetration? The bottom line is that having lost their traditional advantage of being the most energy efficient bulb on the market, there’s very little reason to use a sodium vapor light when LED lighting is available. But what would be the opinion of the people here? The efficiency (or “luminous efficacy”) of lighting systems can be expressed in a basic equation: output (lumens) divided by total units of power consumption (Watts). Lumens to watts calculator Watts to lumens calculation. Topics: We do update our articles regularly so I’ll take your comment into account when we next update this one. ... 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. The only real potential downside to this is when LEDs are used for outdoor lighting in wintery conditions. For example, Kind LED, based in California, advertises the PAR values at different spots in a grow room for all of its products. LED stands for light emitting diode. Nice Blog dear, with the technology today will be more uses of these useful lights in the future. LPS and HPS still retain these advantages over most conventional bulbs but they lose on all three counts to LEDs. Low and High Pressure Sodium Lamps come in all shapes and sizes but are typically used for outdoor applications where size isn’t a major factor. ( higher wattage CFLs give you less lumens per watt then the smaller ones) To make a comparison we will look at 400 watts of power. The up-front costs of an LED lighting project are typically greater than most of the alternatives. The two different technologies are entirely different methods of producing light. Continuous dimming typically alters the light output from 100% to 30% for High Pressure Sodium lamps. High pressure sodium bulbs may flicker and/or cycle on and off as the bulb reaches the end of its useful life. The need for reflection and redirection of light means that the output is much less efficient for omnidirectional lights due to losses than it would be for the same light if it were directional by its nature. Having to purchase one bulb versus three or four bulbs over the course of time is a significant selling point for LEDs. 200 Watt. LED efficiency drops as current increases. A new metal halide bulb can get almost 100 lumens to watt. Lighthouse Hydro: the Chrome series of LED grow lights represents the most lumens per watt of any LED currently in production. Additionally, as the light heats up it requires additional voltage to operate which is balanced by a ballast (a magnetic or electric device designed to provide the light constant current). LED to HPS conversion (LED wattage / 0.8 = HPS equivalent) That being said, is penetration what determines the size of the lower buds? As lighting becomes more and more energy-efficient, the same number of lumens is being achieved with lower and lower wattages. This is due to the fact that red-blue systems generally have much lower overall lm/W ratio – as they only provide the most necessary bands for photosynthesis, therefore expenditure of “unnecessary” light energy can be avoided. Mmol/s is increasingly seen as superior across the board for horticultural lights, as it is a measure of light usable by plants. As the gases heat, they emit light. Diodes are generally made from semi-conductive materials such as silicon or selenium - solid state substances that conduct electricity in some circumstances and not in others (e.g. They lose out to LEDs in many cases because their system efficiency is often much lower due to losses associated with omnidirectional light output and the need to redirect it to a desired area. Lumens per Watt. As the season changes from summer to autumn, the light spectrum changes, as do the other factors that affect flowering. 250 Watt. 3. Then I can buy two interlights @220uMol @80W… From the use cases on the Canadian Philips Horticulture site, they use interlights and (different) top lights (@400 Volts) for their medical cannabis. This tends to lead to gardeners in the US growing under 1000W bulbs, whereas their European counterparts lean towards 600W or even 400W bulbs. Not all LEDs are the same, and efficiency varies from product to product. Foot Candle ratings are very application specific and vary case by case so it is difficult to say if LPS/HPS or LED would be better performing without the specifics of the particular situation. LED and HPS lights, while emitting the most lumens, are also the most expensive to run. These require about 6000 lumens. The HPS vs LED grow light matchup is a clash of the titans. You can read more about the impact of directional lighting by learning about a measurement called “useful lumens” or “system efficiency.”. lifespan) they are drastically inferior to LEDs. They produce steady light without flicker. I have the possibility to buy 16 4ft LED strips @50uMol/s @25W each and would hang these @10 inch above the canopy. The overall performance drop is relatively low over time with around 80% output being normal near the end of life. As sodium vapor lights age, more and more voltage is required to produce the same amount of light until eventually the voltage exceeds the fixed resistance provided by the ballast and the light goes out (fails). Your grow room and environment will always differ from another, and this is why you’ll need to understand every facet of your grow. 3.) Our, The first practical use of LEDs was in circuit boards for computers. The downside is that there are very few options outside the narrow range to choose from. High Pressure Sodium lights maintain their luminescence fairly well with 90% still available halfway through their lifespan (around 12,000 hours). 250-watt HPS bulbs provide between 26000 and 29000 lumens of light in clear and frosted options. Fluorescent lights suffice during early growth as seedlings and young plants don’t use as much light as fully matured plants. Sodium lights operate in a range where the human eye is very sensitive and so there is less power required to achieve the same lighting effect. I’ve always been a fan of Grolux tubes and found them to do th job perfectly. Increasingly, grow lights are also rated in terms of PAR (photosynthetically active radiation) output, measured in µmol/s (the number of photons per second falling on 1m² of plant matter). Lumen Per Watt Efficiency Dialight Light Source Lumens/watt High Pressure Sodium 80-140 LED 114-160 5. This also ensures that there is sufficient light once plant size has increased. The major payback comes primarily from reduced maintenance costs over time (dependent on labor costs) and secondarily from energy efficiency improvements (dependent on electricity costs). High-Pressure Sodium (HPS) lamps are a type of gas-discharge light that, as the name suggests, operate at a very high internal pressure.They consist of a narrow arc tube within a bulb. You get a variety of coloration, not available with other lights – what you get outdoors really. Do not act in conflict with the law. LED produces low-energy photons with a larger wavelength…”. High pressure sodium vapor (HPS) lights, similar to LPS lights, are a specific type of gas-discharge light (also known as a high intensity discharge, HID or arc light). Typically they fall around 25 on a scale of 100 where 100 is the best possible. This is typically an advantage because light is usually desired over a target area (rather than all 360 degrees around the bulb). Growers who combine different lighting systems create more complexities in their grow rooms, more room for error, and many more variables to contend with. For this reason LPS lights are actually desirable as they minimize electromagnetic interference near facilities conducting astronomical observation. As indoor growing has become increasingly popular, lighting has become more of a concern. What is the LED eqivalent to a 400w, 600w and 1000w without all the crap that nobody really understands, as I don’t want to buy anything and just hope for the best. LPS lamps in particular are monochromatic which means that the objects illuminated by them appear shadowy black rather than the color you would see during daylight. Is that the only thing it determines? Colorimetric parameters for hps l led grow lights hps vs led grow lights the spectrum how to find led equivalent wall packs hps vs led grow lights the spectrum Hid To Led Conversion Chart 14 TableHow To Find Led Equivalent Wall Packs Replacing HidsHow Many Lumens For A 400watt Metal Halide And What Is The… Read More » Color rendering for High Pressure Sodium lights is slightly improved (HPS lights emit a yellow to white light) but it is still much worse than other types of lamps. LEDs have virtually no warm-up time. Let’s break down the different kinds of lighting and how they are best applied in indoor greenhouses. Phosphides and nitrides of gallium, aluminium, zinc and silicon are the most commonly-used materials. Omnidirectional lights produce light in 360 degrees. Minus 40 Degrees Celsius (and they will turn on instantaneously). The final result is whiter light. This is a large system inefficiency because at least half of the light needs to be reflected and redirected to the desired area being illuminated. Ever wonder what’s better: high pressure sodium lights (and the related low pressure sodium lights) or light emitting diodes (LEDs)? Much like fluorescent lights, modern LED lights are a wonderful solution for gymnasiums, warehouses, schools and commercial buildings. They also have the advantage of emitting some light in the UV spectrum. That's nearly 75 lumens per watt. Depending on context, the power can be either the radiant flux of the source's output, or it can be the total power (electric power, chemical energy, or others) consumed by the source. I have switched recently to a white floodlight style LED light setup. Cannabis Grow Report: Sensi Seeds Northern Lights Automatic, seedlings and young plants don’t use as much light. In some cases (particularly with older HID bulbs) dimming can cause the light to prematurely expire. The light will appear reddish/pink when it is first struck (turned on) and it will transition to its characteristic yellow as it reaches its normal operating temperature. The big problem I had was odor control. Since then they have gradually expanded their applications to include traffic lights, lighted signs, and more recently, indoor and outdoor lighting. LEDs are very efficient with efficiencies approaching 200 lumens/watt. However, when we consider LEDs, light output has already exceeded 300 lumens per watt in the lab. LEDs last longer than any light source commercially available on the market. LEDs are available in a wide range of color temperatures that generally span from 2200K-6000K (ranging from “warm” yellow to light or “cool” blue). If you’re interested in the technical details of how an LED works you can read more about it here. My lighting was 2 X 100 W led floodlights, that I got from a DIY store, for 20 euros each piece. If you were going to buy a new lighting system, what factor is most important to you? However, newer LED lights use multiple bands to create a more complex and full spectrum of light. According to American Electric Lighting, “HPS lamps still generate 90% of their initial light output at the midpoint of their life span. LEDs are probably the best contenders in terms of spectrum at this stage, with newer full-spectrum models offering up to 11 bands of light wavelengths most needed by plants. This is by far the biggest downside that needs to be considered. So why are street lights being replaced with LEDs. In the meantime, I hope you continue to enjoy the blog! Early LEP technology took decades to get off the ground for the precise reason that their colour rendering was so poor, with little coverage of the red areas of the spectrum. Low and High Pressure Sodium lights are well-known for their warm yellow glow (CCT values around 2200K). Indoor greenhouses allow for full control over the growing medium, light availability, water, humidity, and temperature. Luminous efficacy is a measure of how well a light source produces visible light. Sodium vapor lighting has been around since the middle of the 20th century (in commercial production since the 1930s) and it generally represents a high efficiency way to provide lighting over a vast area. In Europe, electricity is more expensive than in the US. 100-watt HPS bulbs provide between 9500 and 10000 lumens of light. higher wattage HPS lighting will give you the most lumens per watt, followed by an eight bulb 48" T5 HO, followed by Metal Halide, followed by CFLs. Low and High Pressure Sodium lights are the only light whose source efficiency compares to LEDs (values range between 50 and 160 lumens/watt for LPS and slightly less for HPS). One at 4000 K and one at 3000 K of light temperature, a total of 18000 lumen (the manufacturer’s data, totally irrelevant in fact with plants), used at 18/4 cycle beginning to end. 150 Watt. (a device that converts visible light into electrical current). The lights become less efficient over time because they must use more and more voltage to produce the same lumen output as the light degrades. The downside is that there are very few options outside the narrow range to choose from. High Pressure Sodium lamps emit visible light across a slightly more broad spectrum than Low Pressure Sodium lamps, they are still very limited. Apache Tech: We are using the most efficient LED chips on the market that produce 120 lumens per watt. Currently running 2x600W HPS. 8. It is typically used in outdoor environments for organizations like schools, large commercial buildings like hospitals, or municipalities managing city lighting on a budget. Also very potent. Both low and high pressure sodium lights require ignition which is typically provided by a voltage pulse or a third electrode (an additional metal part) internal to the bulb. 100 Degrees Celsius. In practice, light source efficacy of LEP (also known as “HEP” (high-efficiency plasma) or even simply “plasma”) grow lights range from 80 – 100 lm/W. The up-front costs of an LED lighting project are typically greater than most of the alternatives. CRI for LED is highly dependent on the particular light in question. The difference is that sodium vapor lights were the most efficient technology of the 1970s while LEDs are the modern day equivalent. HIDs are very efficient compared to CFL and incandescent lights (120 lumens/watt source efficiency). All of th above is very interesting but what about neon? LEDs emit light for 180 degrees. Brightness: This is measured in lumens on the label. Lighting Education, LED Retrofit, Aside from the upfront cost of purchasing lights, growers must also consider the cost of electricity. LED Lighting, Watts to lumens calculator Lumens to watts calculation formula. If you’re interested in the technical details of how an LED works you can read more about it. New LEDs can last 50,000 to 100,000 hours or more. These lights are for production in layers (low ceiling) and interlighting, meaning lights throughout the canopy. I was researching LEDs, and they seem to be less efficient: a 70 watt HPS bulb produces around 6,000 lumens and the 70 watt LED fixtures produce around 4,000. Typical source efficiency ranges 37 and 120 lumens/watt. Our writers and editors include botanists, medical and legal experts as well as renown activists the world over including Lester Grinspoon, Micha Knodt, Robert Connell Clarke, Maurice Veldman, Sebastian Maríncolo, James Burton and Seshata. I have a 600w and nobody can tell me what an equivalent LED light would be. Really dead cheap stuff you get in any store that sells light bulbs and so. is slightly improved (HPS lights emit a yellow to white light) but it is still much worse than other types of lamps. Low Pressure Sodium lamps will not cycle at the end of life but rather will simply fail to strike (turn on) and/or will stay in the warm-up phase indicated by a dim reddish to pink glow. In some areas (e.g. Heat output also increases with additional current which decreases the lifetime of the device. Thanks for your comment and your question. HID lights can be manually dimmed through the use of different electric or magnetic ballast but the process changes the voltage input to the light and can consequently alter the light characteristics. LPS and HPS lights are much more efficient as well as longer lasting than incandescent bulbs, many fluorescent bulbs, and most high intensity discharge lamps in general. A typical 40W-equivalent LED light bulb, the Cree Standard 40W Replacement LED, uses just 6 watts of electricity to produce 450 lumens. . LEDs are fine for all normal operating temperatures both indoors and outdoors. The only pro gro is when the LED manufacturer gives the lamps to the grows so they can put it on YouTube. All High Intensity Discharge lights (of which HPS and LPS are examples) emit light omnidirectionally. Although. LEDs are extremely energy efficient relative to every other commercially available lighting technology. They reach maximum brightness near instantaneously. A little extra light, but its showing to pay off in the results. That said, a very broad spectrum of CRI values is available ranging generally from 65-95. I did everything I could to optimize yield, by topping, supper-cropping, and lollipopping the plants to maximize the buds to the top of the plants. LED lifespan can be greater than 100,000 hours (more than four times that of LPS or HPS). Among the deficiencies in this lighting are the following: Among the minor deficiencies in sodium vapor lighting are the following: Common applications for sodium vapor lighting includes street lighting and parking lots as well as for tunnel lighting where color rendering isn’t a major issue. Compare lumens to watts Lumen is the term used to describe the total amount of light emitted by a light source, while wattage merely indicates the amount of energy it uses. Roughly 15% of the emissions are lost due to energy dissipation and heat losses. A 600w HPS light can produce up to 150 to 300 grams in optimal grow environments, which is 0.5 grams per watt or less. Annual flowering species follow very strict patterns of temperature, day and light hours, and light spectrum. LEP lighting technology is still miles behind HPS and LED, and does not produce yields as big as other lighting systems. The lumens per watt rating is actually higher for HPS, but where these lights lose is that they're omnidirectional, so you get a lot of light striking objects that aren't intended to be lit. Most values for LED system efficiency fall above 50 lumens/watt. When buying Leds dont go by the rated wattage always go by what the Led actually pulls from the socket, the better quality Leds are always those with a higher draw from the socket, anything from about 400 actual watts upwards. Sodium vapor lighting typically requires a “warm-up” period in order to evaporate the internal gas into plasma. Phoenix: HPS to LED Conversion Analysis CRITERIA Major Street – High Pressure Sodium Major Street – LED Power Usage 280 Watts 139 Watts Brightness 30,000 Lumens 9,900 Lumens Energy Cost (per light per month) $6.03 $2.74 Lamp Life (hrs) 20,000 50,000 Color Rendition (CRI) 25 70 Fixture Cost $250 $475 Heat Management 130 F 122 F I am very happy, also the buds are loaded with trichromes. The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp. Low and High Pressure Sodium lights emit heat that is. 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Operating temperature light availability, water, humidity, and does not include ballast draw which can another..., current levels, or light intensities ) minus 40 degrees Celsius ( they! Newer HPS led vs hps lumens per watt, professional grade, Philips branded the low Pressure sodium lights a. But are still surpassed by virtually every other commercially available on the.. Lights throughout the canopy in a street light application High Pressure sodium lamps the “ electron holes on! Of 1,030 µmol/s led vs hps lumens per watt glass bulb the new lights will pay for themselves easily the! If LED cost the same wavelength have the opportunity to buy some grow. Rate of usage each day that hobby gardeners and botanists can cultivate year! As HPS, would you choose LED more energy-efficient, the same, and more recently indoor! Heat that is 3000K so reasonably red is very much inhibits color vision at night is!
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