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. You can read more about the impact of directional lighting by learning about  a measurement called “useful lumens” or “system efficiency.”. As the gases heat, they emit light. I seriously think that I’m going to get a Hans panel in the near future (after vacation, that is). LEDs are very efficient with efficiencies approaching 200 lumens/watt. As indoor growing has become increasingly popular, lighting has become more of a concern. The big problem I had was odor control. 100 Degrees Celsius. at certain voltages, current levels, or light intensities). LED efficiency drops as current increases. i want to purchase quality leds for my home kitchen tell me about it. Fluorescent lights suffice during early growth as seedlings and young plants don’t use as much light as fully matured plants. Low and High Pressure Sodium lights emit heat that is. Most values for LED system efficiency fall above 50 lumens/watt. 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. How should I calculate PAR/plant ? 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. If you were going to buy a new lighting system, what factor is least important to you? As indicated by the name, “high” pressure sodium vapor lights operate at a higher internal pressure. Are you planning to get into indoor gardening and you are torn between going for LED Vs HPS grow lights? HPS lamps are better but are still surpassed by virtually every other light on the market. For example, GE Lucalox 600W bulbs produce 90,000 initial lumens (“initial lumens” refers to mean output over the first 100 hours), while Lumatek’s high-par 600W HPS lamps produce 92,000. LEDs produce a very narrow spectrum of visible light without the losses to irrelevant radiation types (IR, UV) or heat associated with conventional lighting, meaning that most of the energy consumed by the light source is converted directly to visible light. The largest selling point of LPS and HPS lights is the cheap selling price, the high energy efficiency (low operating costs), and the relatively long lifespan. Often our other readers will have advice and experience to share here too. The overall performance drop is relatively low over time with around 80% output being normal near the end of life. The only real potential downside to this is when LEDs are used for outdoor lighting in wintery conditions. I want to thank you for this excellent information!! The problem with rating Leds is that Leds arent driven at their maximum wattages as that would make them burn out too quickly so for example an Led might be advertised as a 600w Led but would be driven at just over half that amount so might pull only something like 350w from the socket. You make a good point! That said, the price of LEDs are rapidly decreasing and as they continue to be adopted en masse the price will continue to drop. 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. HPS S/P ratio = 0.5. Stouch Lighting Services, Our value engineering service can help.). Lifetime / Lumen Maintenance Dialight Light Source Lifetime in Hours (x1000) High Pressure Sodium 10-24 LED 100+ They produce a dark yellow glow which is generally a very low quality light. Snow falling on traditional lights like HID will melt when it comes into contact with the light. This is by far the biggest downside that needs to be considered. Lighthouse Hydro: the Chrome series of LED grow lights represents the most lumens per watt of any LED currently in production. 100-watt HPS bulbs provide between 9500 and 10000 lumens of light. This means that hobby gardeners and botanists can cultivate all year round without the limitation of seasons. Like most legacy lamps HPS and LPS lamps operate by using a glass bulb. A diode is an electrical device or component with two electrodes (an anode and a cathode) through which electricity flows - characteristically in only one direction (in through the anode and out through the cathode). That said, HPS lights in particular maintain fairly good light output (roughly 80%) at their typical end-of-life (24,000 operating hours). All High Intensity Discharge lights (of which HPS and LPS are examples) emit light omnidirectionally. LEDs emit light for 180 degrees. 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. LPS lamps emit a monochromatic yellow light which very much inhibits color vision at night. However, when you consider it as a 200-watt light, the difference would look like this: 200 watts x 120 lumens/watt = 24,000 total lumens effective output. This is especially true of those bulbs in linear tubes. Well here’s a head-to-head comparison of the two followed by an in-depth discussion of each technology in turn. 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. 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. That said, although LPS and HPS bulbs have a long lifespan relative to most competitors, they still fall short of LEDs. If you’re interested in the technical details of how an LED works you can read more about it here. Please help! Indoor greenhouses allow for full control over the growing medium, light availability, water, humidity, and temperature. 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). To begin, let s unpack the information that exists on this complex topic. 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. The two different technologies are entirely different methods of producing light. Sodium vapor lighting typically requires a “warm-up” period in order to evaporate the internal gas into plasma. I go for LED lighting. 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. Because LED lights typically operate with multiple light emitters in a single luminaire the loss of one or two diodes does not mean failure of the entire luminaire.. Low and High Pressure Sodium lights can fail in a number of different ways. Sodium, mercury and xenon are the three elements inside the tube, used at different stages of ignition (and for different colored light). Meanwhile, a 60W CFL will give off nearly 3,000 lumens. (a device that converts visible light into electrical current). Find out which is more efficient for plant growth when the scientific results are revealed! Retail Lighting, In terms of lumens per watt, today’s double ended HPS lights are quite efficient compared to other types of traditional artificial lighting, producing over a 100 lumens per watt. Energy saving lamps have high luminous efficacy (more lumens per watt). Metal Halide lights average efficiency range between 70 and 100 lumens/watt. LEDs are naturally directional (they emit light for 180 degrees by default). By far the most efficient HID variant is the Low Pressure Sodium lamp whose source efficiency can range from 60-190 lumens/watt. 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. In the meantime, I hope you continue to enjoy the blog! Having to purchase one bulb versus three or four bulbs over the course of time is a significant selling point for LEDs. lifespan) they are drastically inferior to LEDs. Parking Garage Lighting, It is particularly useful for outdoor lighting where energy efficiency is at a premium (such as with municipalities lighting the streets or other common areas like parking lots.) Low and High Pressure Sodium lights are very cheap to purchase as well as fairly cheap to maintain. I use 600 watt led for veg and 600 hps + 600 mh for flower. They produce steady light without flicker. The lights are (2) 100W – 4000K white light LED flood light style, rated at 12,000 lumens each. It is typically used in outdoor environments for organizations like schools, large commercial buildings like hospitals, or municipalities managing city lighting on a budget. LED Vs HPS Grow Lights comparison with regards to; For an interesting take on the history of street lighting in the United States read, Low and High Pressure Sodium lights are well-known for their warm yellow glow (CCT values around 2200K). LED dimming functions by either lowering the forward current or modulating the pulse duration. 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). Annual flowering species follow very strict patterns of temperature, day and light hours, and light spectrum. Lumen Per Watt Efficiency Dialight Light Source Lumens/watt High Pressure Sodium 80-140 LED 114-160 5. This is thought to be beneficial to plant growth, and modern LEDS often incorporate white along with reds and purples of the visible spectrum. Really dead cheap stuff you get in any store that sells light bulbs and so. Were you satisfied with the results from LED? 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. This does not include ballast draw which can add another 15% of energy consumption. 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. It’s difficult to make a straight conversion if you’re trying to factor in all the ways in which LED and HPS are different, but the average 600w LED will use about 400w when running at full strength, and the average 1000w LED will use about 900w. We do update our articles regularly so I’ll take your comment into account when we next update this one. 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. 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. LEDs emit very little forward heat. Roughly 15% of the emissions are lost due to energy dissipation and heat losses. Do not act in conflict with the law. Here, we will take a good look at the their differences and what growers can expect from each type. 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. This means, you can use a 120 Watt LED bulb with 18,000 lumens to replace your 400W HPS light bulb. In Europe, electricity is more expensive than in the US. are notorious for having the worst CRI values on the market. Watts to lumens calculator Lumens to watts calculation formula. Continuous dimming typically alters the light output from 100% to 30% for High Pressure Sodium lamps. 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. Correlated Color Temperature (read more here). High pressure sodium bulbs may flicker and/or cycle on and off as the bulb reaches the end of its useful life. Theoretically, LEP’s luminous efficacy should exceed a HPS source by 15-20%, as no power is wasted on heating electrodes. LED Retrofit, Lm/W is a measure of what is visible to the human eye. For example, a traditional 60 watt incandescent bulb in the US produces 860 lumens. LEDs are very easy to dim and options are available to use anywhere from 100% of the light to 0.5%. 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). 200-watt HPS bulbs provide about 22000 lumens of light. 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. 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). If LED cost the same as HPS, would you choose LED? Over the years, advances in technology have brought about innovations in how to light our homes and commercial buildings. If you’re interested in the technical details of how an LED works you can read more about it. The first step is to use the known PPF/Watt (Photosynthetic Photon Flux/Watt, the measure of light used by plants per unit of energy consumed) of … Originally I had a 1000W HPS in my flower tent, and I had to run an air conditioner to keep the heat down. Although improvements have been made in HPS lighting technology, they are still generally considered poorer in their replication of daylight than other modern lighting systems. Once the arc is ignited it melts and evaporates metal salts (sodium) internal to the device. Low and High Pressure sodium lights produce a very narrow spectrum of light (particularly LPS lights). According to American Electric Lighting, “HPS lamps still generate 90% of their initial light output at the midpoint of their life span. 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). Low and High Pressure Sodium costs vary depending on the specific type of light. 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. Without the addition of xenon or mercury, sodium vapour gives off an intensely reddish-yellow light. The typical 100W-equivalent LED light costs somewhere between $10 and $20. is slightly improved (HPS lights emit a yellow to white light) but it is still much worse than other types of lamps. Let’s break down the different kinds of lighting and how they are best applied in indoor greenhouses. As light is one of the two most basic foods for any plant (water being the other), it naturally has a big impact on final yield. High-efficiency lighting is generally accepted to output at least 90 lumens per Watt (lm/W), with some bulbs achieving 150 lm/W or even higher. I have switched recently to a white floodlight style LED light setup. It has revolutionized the lighting industry. LEDs have virtually no warm-up time. Ever wonder what’s better: high pressure sodium lights (and the related low pressure sodium lights) or light emitting diodes (LEDs)? Commercial Lighting, The efficiency for LED lights ranges between about 40 and 120 lumens per watt. Low and High Pressure Sodium lights are well-known for their warm yellow glow (CCT values around 2200K). HIDs are very efficient compared to CFL and incandescent lights (120 lumens/watt source efficiency). You can use the grow light efficiency calculation tool for most grow light systems such as CFL, HPS, MH, CMH and LED. Although we all want to see a room full of 1,000-watt HID powering a field of cannabis, we’re limited by our available budget and space. That could easily ruin your eyesight, so you need to be really careful. 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). In the meantime I hope this answers your question, and that you continue to enjoy the blog. I bought a 400W magnetic induction florescent light that is 3000K so reasonably red. They do, however, show degraded performance at significantly high temperatures and they require significant heat sinking, especially when in proximity to other sensitive components. I can also witness an improving effect on smell and taste – better photosynthetic abilities due to the leds possibly? My High Pressure Sodium security light needs a new bulb. The luminous flux Φ V in lumens (lm) is equal to the power P in watts (W), times the luminous efficacy η in lumens per watt (lm/W): Φ V (lm) = P (W) × η (lm/W) Watts to lumens calculation It is very much the opposite of a photovoltaic cell (a device that converts visible light into electrical current). The downside is that there are very few options outside the narrow range to choose from. Lumens to watts calculator Watts to lumens calculation. ... We do recommend our 480 watt fixtures for the 1000w HPS and our 960w for 1500+. Typical source efficiency ranges 37 and 120 lumens/watt. 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 lights require a warm-up time that varies depending on the light. My lighting was 2 X 100 W led floodlights, that I got from a DIY store, for 20 euros each piece. The question of LED vs HPS lights can also be affected by what continent you are living on. 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). 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. Minus 40 Degrees Celsius (and they will turn on instantaneously). 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. (Don't give up if you received an expensive proposal to upgrade to LEDs. Much like fluorescent lights, modern LED lights are a wonderful solution for gymnasiums, warehouses, schools and commercial buildings. 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. ( 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. 8. If you checked this debate five years ago, HP… Is that the only thing it determines? Lush Lighting: Provides 70,000 lumens and 1,200 μmoles when 2' away from LED … LED is snake oil. What has your experience been with lighting systems and which one do you prefer? 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. 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. This is usually overcome with LEDs by covering the light with a visor or facing the light downward towards the ground. We ran a twitter poll to understand how our viewers used different lights. With Kind LED’s LumiGrow light, PAR is measured at a total value of 1856 µmol/s, with the highest figure being read directly in the centre of the square metre measured. 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. When looking at those numbers it may not seem like a very big difference. Typically they fall around 25 on a scale of 100 where 100 is the best possible. Luminous efficacy is a measure of how well a light source produces visible light. However, when we consider LEDs, light output has already exceeded 300 lumens per watt in the lab. Low pressure sodium vapor (LPS) lights are a specific type of gas-discharge light (also known as a high intensity discharge, HID or arc light). Generally they are cheap compared to LEDs ($5-$10 for a 100W incandescent-equivalent LPS or HPS bulb). 2. Now, fine-tuning of variables such as the gases used, the coatings (such as metal halide salts) and even the pressure of the chamber can create far more precise replications of daylight. The technology pays the investor back over time (the payback period). The results were very disappointing, I went from 3-4 OZ per plant (organic soil grow using Fox Farms) to 1-1.5 OZ per plant, same set up as before. Whereas the newest LED chips and drivers are now giving 190 lumens per watt effective. If you have any information please contact us. 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. In particular, they have been known to start fires in the event that the lamp is broken and the sodium metal is exposed. 7. 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. These include the following: Considering the upside you might think that LED lights are a no-brainer. The power P in watts (W) is equal to the luminous flux Φ V in lumens (lm), divided by the luminous efficacy η in lumens per watt (lm/W): P (W) = Φ V (lm) / η (lm/W) Lumens to watts table 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. There are many variables, so lets dig in! ; “I am comparing LED to HPS for my cannabis operation. 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). So why are street lights being replaced with LEDs. Lifespans are variable but typical values range from 25,000 hours to 200,000 hours or more before a lamp or fixture requires replacement. LEDs can be extremely small (less than 2mm in some cases) and they can be scaled to a much larger size. New LEDs can last 50,000 to 100,000 hours or more. Most values for LED system efficiency fall above 50 lumens/watt. 3.) LED lighting has relatively high initial costs and low lifetime costs. The Sensi Seeds Editorial team has been built throughout our more than 30 years of existence. A typical 40W-equivalent LED light bulb, the Cree Standard 40W Replacement LED, uses just 6 watts of electricity to produce 450 lumens. I’ve taken a bit of a closer look into this topic. Thanks for your comment and your feedback . The ultimate purpose of the device is to emit light, not heat. The HPS vs LED grow light matchup is a clash of the titans. HPS bulbs typically emit 80% of their original rated output at the end of life (around 24,000 hours). During start (while the sodium is still in solid form) the lamp emits a dim reddish/pink glow. LEDs emit light for 180 degrees. Outdoor Lighting, Problems with the starter and/or improper matching of a starter and an HPS lamp may cause cycling even though the starter is otherwise working properly as the lamp is continually trying to light itself. I am about to harvest the first plant, and it looks like it will yield 2-3 OZ, maybe more. If you were going to buy a new lighting system, what factor is most important to you? While your actual use may vary, the dollar amount noted will give you a good baseline. High Pressure Sodium lights have excellent lifespan as well (although not as good as LED) which is why they have traditionally been used for outdoor street lighting in municipalities where energy efficiency is at a premium. 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. A common measurement of source efficacy is lumens per watt , which reflects the amount of light produced by the source divided by the power required to operate it. LEDs are extremely energy efficient relative to every other commercially available lighting technology. CRI for LED is highly dependent on the particular light in question. LED Lighting, document.write(""); Laws and regulations regarding cannabis cultivation differ from country to country. Not all LEDs are the same, and efficiency varies from product to product. 5. Led also has an effect on color of the buds. Additionally, despite their long warm-up period (5-10 minutes), low pressure sodium lamps will re-ignite immediately in the event of a power interruption. Your grow room and environment will always differ from another, and this is why you’ll need to understand every facet of your grow. Cannabis Grow Report: Sensi Seeds Northern Lights Automatic, seedlings and young plants don’t use as much light. While this is increasingly becoming the case, there are still a few tradeoffs that need to be made when you choose LED: In particular, LED lights are relatively expensive. 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). 400 Watt We would love to hear from you in the comments below. Broken bulbs release a small amount of toxic mercury as a gas and the rest is contained in the glass itself. Which source do you recommend?” These are questions people ask me almost on a daily basis. In some circumstances heat emissions could be beneficial, however, it is a generally a bad thing to emit heat as it represents an energy inefficiency. LEDs have faster switching (no warm-up or cool-down period). Simply, the more lumens you can get from a watt, the more efficient the lamp is at doing its job. In the beginning, all we had was the standard, incandescent light bulb. LED and HPS lights, while emitting the most lumens, are also the most expensive to run. absorbed by the ballast and/or lost to the environment. Even so, they typically aren’t produced below roughly a centimeter in width and so they do not compare to the small size and robust build of a solid state light like LED. Since then they have gradually expanded their applications to include traffic lights, lighted signs, and more recently, indoor and outdoor lighting. 6. If so, using methods like the Scrog method would mean I would need less wattage for penetration? The typical lifespan for a fluorescent bulb, by comparison, is 10-25% as long at best (roughly 10,000 hours). Required fields are marked *. 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. 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And/Or lost to the led vs hps lumens per watt eye draw those same wattages direct from the upfront cost of electricity have recently! Methods like the Scrog method would Mean i would need less wattage penetration...