3 Things You MUST Know Before Buying an LED Grow Light
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Date: 2022-07-18
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Comments and reviews: 15
David
At last someone talking sense. thank you. I am a beginner and trying to learn all I can so this was very helpful thank you. now. I understood what you was saying but it's caused me some problems lol. first if I may, your telling me that eBay ect sell reasonable lights at reasonable prices but lots of homework and checking hundreds of products. obviously I don't want a reasonable light. I want the best light and the best plants and crops. where would I find a light like that if not on ebay. please could you make me a recommendation for the best lights so I can at least get started for now. maths is not my favorite topic and I realise now I have a mamoth task of filtering thought the world's light stocks and doing lots of maths. I don't mean to seem lazy but I realise this is beyond my mind and capability at the moment. I've just learning about soils and micro biology and nutrients and chemical reactions and all sorts of things. for a while I've been doing my light research as well but to understand creation you have to hold the knowledge of a god and I'm just learning and I'm finding it all Abit heavy man lol haha. I feel like I'm up to my neck in it but i still don't know yet lol. please my friend can you just push me on the right direction for now please, many thanks. I wish to grow from seed to bud, organically, with a top performing light source. I would really appreciate your help. thankyou.
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At last someone talking sense. thank you. I am a beginner and trying to learn all I can so this was very helpful thank you. now. I understood what you was saying but it's caused me some problems lol. first if I may, your telling me that eBay ect sell reasonable lights at reasonable prices but lots of homework and checking hundreds of products. obviously I don't want a reasonable light. I want the best light and the best plants and crops. where would I find a light like that if not on ebay. please could you make me a recommendation for the best lights so I can at least get started for now. maths is not my favorite topic and I realise now I have a mamoth task of filtering thought the world's light stocks and doing lots of maths. I don't mean to seem lazy but I realise this is beyond my mind and capability at the moment. I've just learning about soils and micro biology and nutrients and chemical reactions and all sorts of things. for a while I've been doing my light research as well but to understand creation you have to hold the knowledge of a god and I'm just learning and I'm finding it all Abit heavy man lol haha. I feel like I'm up to my neck in it but i still don't know yet lol. please my friend can you just push me on the right direction for now please, many thanks. I wish to grow from seed to bud, organically, with a top performing light source. I would really appreciate your help. thankyou.
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Rondogardener
I was shocked to find that a daylight Fein LED 60-watt equivalent light bulb actually is better than my LED grow light bars. I started a number of plants on 3 different shelves in my mini-greenhouse that I have on the back inside wall of the den with no natural light and noticed that every plant started from seed under 3 Fein 60W equivalent bulbs had much shorter stems before leafing out, were much stockier, and the leaves the darkest green I have ever achieved. All sprouted seeds receive the same normal plant food solution. I am not abandoning the grow-light strips, but I am thinking that the spectrum in the daylight bulbs is full-spectrum and not partial. I have started my own garden plants for many years, and nothing beats what I have seen this year. My squash plants have never begun to vine before I put them into the ground, but these begun under the Fein lights are already wanting to vine at only 6 inches of growth.
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I was shocked to find that a daylight Fein LED 60-watt equivalent light bulb actually is better than my LED grow light bars. I started a number of plants on 3 different shelves in my mini-greenhouse that I have on the back inside wall of the den with no natural light and noticed that every plant started from seed under 3 Fein 60W equivalent bulbs had much shorter stems before leafing out, were much stockier, and the leaves the darkest green I have ever achieved. All sprouted seeds receive the same normal plant food solution. I am not abandoning the grow-light strips, but I am thinking that the spectrum in the daylight bulbs is full-spectrum and not partial. I have started my own garden plants for many years, and nothing beats what I have seen this year. My squash plants have never begun to vine before I put them into the ground, but these begun under the Fein lights are already wanting to vine at only 6 inches of growth.
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Mark
Not sure why but its part wrong. Output = input/resistance and Efficiency = output / input. What matters is the amount of light at a set level - working level, this is called the lux level. The wave band the light omits is also of greater significance with light in one wave band better than in another. If you input 180w and you get 200 lumens at 400mm from the source at a spread of 300mm is it better than the same as the light in another light band but lower lumens (white, red, blue, etc? The spread is also important if covering a number of plants as the further away ang angle of the light from the source the less lumens. Whether you have 100 LEDs or 50 LEDs producing the same lux level does not matter as long as the power draw at the plug is the same
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Not sure why but its part wrong. Output = input/resistance and Efficiency = output / input. What matters is the amount of light at a set level - working level, this is called the lux level. The wave band the light omits is also of greater significance with light in one wave band better than in another. If you input 180w and you get 200 lumens at 400mm from the source at a spread of 300mm is it better than the same as the light in another light band but lower lumens (white, red, blue, etc? The spread is also important if covering a number of plants as the further away ang angle of the light from the source the less lumens. Whether you have 100 LEDs or 50 LEDs producing the same lux level does not matter as long as the power draw at the plug is the same
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robert
What about the Reflected Light from the Shiny Walls in a Grow Tent? . Doesn't that increase your light in the Corners? . And a plant's leaves move to face the strongest Light, so when you measure the light shouldn't your meter face the light center and not straight up? . I would think Reflected light makes a Big difference! . It is the difference between lighting a room with White Walls and a room with Dark Walls. And what's the point in having your most Intense light in the Middle? . Why wouldn't you leave the Center of your light Open and move your lights closer to the sides for a more Even Light Distribution? . Wouldn't that also help keep your light Cooler?
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What about the Reflected Light from the Shiny Walls in a Grow Tent? . Doesn't that increase your light in the Corners? . And a plant's leaves move to face the strongest Light, so when you measure the light shouldn't your meter face the light center and not straight up? . I would think Reflected light makes a Big difference! . It is the difference between lighting a room with White Walls and a room with Dark Walls. And what's the point in having your most Intense light in the Middle? . Why wouldn't you leave the Center of your light Open and move your lights closer to the sides for a more Even Light Distribution? . Wouldn't that also help keep your light Cooler?
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Mark
More science.
You get better light emission efficiency when under running LED chips, which peaks at around 0. 14 watts/LED without cooling. Running at around 1 watt/LED is about 50% as efficient.
For this test it's is due to 2 reasons. Higher currents create higher temperatures. But also (especially for GaN blue) is the Auger effect.
Generally the less power you put though each LED more efficient (more light, less heat per watt) and the longer the lights will last thanks to the latter.
This means the eBay lamp may be more efficient for the same light output as it uses more LEDs IF the heat dissipation is as good.
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More science.
You get better light emission efficiency when under running LED chips, which peaks at around 0. 14 watts/LED without cooling. Running at around 1 watt/LED is about 50% as efficient.
For this test it's is due to 2 reasons. Higher currents create higher temperatures. But also (especially for GaN blue) is the Auger effect.
Generally the less power you put though each LED more efficient (more light, less heat per watt) and the longer the lights will last thanks to the latter.
This means the eBay lamp may be more efficient for the same light output as it uses more LEDs IF the heat dissipation is as good.
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Ken
Not me- I loved this video-I give those lets say Eastern LED stores so much crap for lying about almost everything they sell like false advertising and being completely misleading is just okay. I just finished a round of emails with one swearing his light was 2000 watts and it had 180 Samsung LM301B diodes-. 05 watts per. I said nope, that's only 54 watts he said we dont lie. A person could sit around for an entire season wondering why the hell his plant is barely growing or didn't produce hardly any turpines etc-TRUTH IN ADVERTISING! Thanks bro- great video
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Not me- I loved this video-I give those lets say Eastern LED stores so much crap for lying about almost everything they sell like false advertising and being completely misleading is just okay. I just finished a round of emails with one swearing his light was 2000 watts and it had 180 Samsung LM301B diodes-. 05 watts per. I said nope, that's only 54 watts he said we dont lie. A person could sit around for an entire season wondering why the hell his plant is barely growing or didn't produce hardly any turpines etc-TRUTH IN ADVERTISING! Thanks bro- great video
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Calcium
Diode efficiency question: So, if the Ebay Lights are only operating at 18% efficiency (given a 180w draw for a 1000w unit, is there a way to boost that relatively simply on a DIY basis--perhaps replace a component so the pre-made unit will send more energy to each diode? I just read an article that favored 3w diodes over 10w diodes as they'd be less expensive, not overly powerful and wouldn't require as much of a heat sink.
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Diode efficiency question: So, if the Ebay Lights are only operating at 18% efficiency (given a 180w draw for a 1000w unit, is there a way to boost that relatively simply on a DIY basis--perhaps replace a component so the pre-made unit will send more energy to each diode? I just read an article that favored 3w diodes over 10w diodes as they'd be less expensive, not overly powerful and wouldn't require as much of a heat sink.
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Zommee
Omg! Wayyyy too confusing! You lost me at PAR, but I listened all the way through to 10: 08 & Gave up!
I still do not know any new information when it comes to buying grow lights except for the Lumens & Kelvin #'s I knew before I came to this video, but my problem is, I'm trying to find some strip LED grow lights but none of them (on Amazon) even show the Lumen or Kelvin # amounts. Ugh I'm so frustrated!
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Omg! Wayyyy too confusing! You lost me at PAR, but I listened all the way through to 10: 08 & Gave up!
I still do not know any new information when it comes to buying grow lights except for the Lumens & Kelvin #'s I knew before I came to this video, but my problem is, I'm trying to find some strip LED grow lights but none of them (on Amazon) even show the Lumen or Kelvin # amounts. Ugh I'm so frustrated!
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Dave
in your example the LEDTonic pulls 112 watts of power divided between it's 64 diodes that is 1. 75 watts per diode, so similar watts per diode to the ebay light. I do not see how this makes it more efficient. the moles per joule seems to be the only way to know which is more efficient. Or perhaps I am not understanding the comparison?
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in your example the LEDTonic pulls 112 watts of power divided between it's 64 diodes that is 1. 75 watts per diode, so similar watts per diode to the ebay light. I do not see how this makes it more efficient. the moles per joule seems to be the only way to know which is more efficient. Or perhaps I am not understanding the comparison?
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David
I do study science and things like this and I thought i had a basic understanding of light, the speed of light, the distance traveled in one second, the colours that make white light ect ect. BUT. if I move my plant ONE FOOT away from this lamp my light quality is going to degrade lol haha. I find this quite amusing
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I do study science and things like this and I thought i had a basic understanding of light, the speed of light, the distance traveled in one second, the colours that make white light ect ect. BUT. if I move my plant ONE FOOT away from this lamp my light quality is going to degrade lol haha. I find this quite amusing
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Platypus
Great video though I am not clear on what range of PAR I should actually be looking for? I understand the higher the better but what is good? I just bought a bulb for seedlings that has 14. 2 PAR and can't find any info on how much area that can actually cover or if it's even worth the money?
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Great video though I am not clear on what range of PAR I should actually be looking for? I understand the higher the better but what is good? I just bought a bulb for seedlings that has 14. 2 PAR and can't find any info on how much area that can actually cover or if it's even worth the money?
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DrReason
I have to admit that your presentation sure sounded informed, but it didn't actually help me figure out how to buy a quality light. So, instead of learning all the scientific details like you in order to buy a light, i just bought the light you reccomened. Hope it works for me. Thanks.
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I have to admit that your presentation sure sounded informed, but it didn't actually help me figure out how to buy a quality light. So, instead of learning all the scientific details like you in order to buy a light, i just bought the light you reccomened. Hope it works for me. Thanks.
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Denis
Love your videos. They are very informative and you do an excellent job of explaining your topic. Some times you hear the narrative in a video and instantly know I cant listen to this guy/ girl. You my friend I could listen to all day. Look forward to viewing more of your videos.
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Love your videos. They are very informative and you do an excellent job of explaining your topic. Some times you hear the narrative in a video and instantly know I cant listen to this guy/ girl. You my friend I could listen to all day. Look forward to viewing more of your videos.
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Grow
Something is unclear. You said the actual power from Ebay light might be 180W? You are not sure. right? If so, how could you compare it with LEDTonic Z5? Are you sure LEDTonic Z5 get 58% effecacy? How do you get the data from both of them? Pls state it clear. Thank you.
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Something is unclear. You said the actual power from Ebay light might be 180W? You are not sure. right? If so, how could you compare it with LEDTonic Z5? Are you sure LEDTonic Z5 get 58% effecacy? How do you get the data from both of them? Pls state it clear. Thank you.
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handmade
Good, interesting vid. Are there some other choices that are comparable that are any less money or better value? Looks like around $300ish and seems to grow one larger plant at a time such as tomato or pepper, or maybe can grow more than one at a time?
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Good, interesting vid. Are there some other choices that are comparable that are any less money or better value? Looks like around $300ish and seems to grow one larger plant at a time such as tomato or pepper, or maybe can grow more than one at a time?
reply
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