The answer is it depends, but a good grow light used properly will 100% work. Answer from DoctorBlazes on reddit.com
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Reddit
reddit.com › r/indoorgarden › do grow lights actually work?
r/IndoorGarden on Reddit: Do grow lights actually work?
July 4, 2023 - ... Yep, they work great as long as the plant is close enough to the light source, and the lights are appropriate for the plant. I use them on a shelf and a greenhouse cabinet in my east facing office and it keeps my tropical plants growing nicely.
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Reddit
reddit.com › r/houseplants › do grow lights actually work?
r/houseplants on Reddit: Do Grow Lights Actually Work?
March 2, 2025 -

I live in a house with little light so my indoor plants have never really thrived. I have tried grow lights in the past but found they didn’t actually work. I have done research, but when it comes to buying a good grow light there are so many misleading advertisements that straight up just lie about the light. It is also difficult finding a light that looks pleasing in my home (warm colours) etc. I’m not too worried about price as I understand quality generally will cost more, but I really need some suggestions for grow lights that you have actually noticed a difference with. Particularly looking at something for my Monstera Thai Constellation, which I want to put in this corner of my bathroom (maybe attach the light to the ceiling?)

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Reddit
reddit.com › r/houseplants › can i use regular leds as grow lights? even the cheap ones is a little expensive for my liking…
r/houseplants on Reddit: Can i use regular LEDs as grow lights? Even the cheap ones is a little expensive for my liking…
February 6, 2025 - I do. I use cheap 60cm, 6500k LED battens from the hardware store. Before that I just used bulbs of similar light colour in lamps. My plants grow perfectly fine. Grow lights do work better however.
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Reddit
reddit.com › r/indoorgarden › do regular led lights do anything for plants? my rooms doesn’t get enough light. i’m looking for a real grow light but this is the set up for now.
r/IndoorGarden on Reddit: Do regular LED lights do anything for plants? My rooms doesn’t get enough light. I’m looking for a real grow light but this is the set up for now.
January 12, 2021 - Then two 45 watt craftsman LED work Lights that are 3500k, and two 18 watt T5 Florescent lights which are 4200k. It is very effective for the growth of the plan, and through the entire life cycle from seed through flowering, as well.
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reddit.com › r/indoorgarden › does regular led lamps work for plants?
r/IndoorGarden on Reddit: Does regular led lamps work for plants?
September 9, 2024 -

Hi! I am currently working on a plant shelf and was wondering if i could use my home led lamps for m'y babies? I have a propagation shelf, classic exotic plants like monsteras but wanna also put a chamber for Peppers! (I suppose Peppers will need crazy lamps 😄) Most of my lightbulbs are 2700-3000K and have an average of 1500lm for 12w. Do you have any advice for m'y setup? 😇

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Reddit
reddit.com › r/plants › can i use regular leds as grow lights? even the cheap ones are a little expensive for me…
r/plants on Reddit: Can I use regular LEDs as grow lights? Even the cheap ones are a little expensive for me…
February 6, 2025 - They might keep your plant alive, but not help it thrive. If you're on a budget, look for full-spectrum grow bulbs which are often more affordable than full setups and work better than regular LEDs.
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Reddit
reddit.com › r/gardening › anybody knows about the led grow light? is it good for plant growing?
r/gardening on Reddit: Anybody knows about the LED Grow Light? Is it good for plant growing?
November 28, 2018 - Look for full spectrum light that use 5w leds with at least 80 per panel. ... There is a lot of parameters to take into account if you want to buy a led grow light. But generally speaking, led grow light are good for plants.
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Reddit
reddit.com › r/houseplants › do led grow lights work through glass, more details in the comments?
r/houseplants on Reddit: Do LED grow lights work through glass, more details in the comments?
February 12, 2021 - Glass absorbs IR and UV light, which is irrelevant for normal LED grow lights. But it also reflects some visible light and that is going to reduce the efficiency of the grow lights. So yes, it will work, but it would be better without the glass.
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LED grow lights come on two flavors. Full spectrum white or red and blue. The red and blue correspond to the photosynthetic peaks. It's what your plant needs to live. The rest of the colors don't mean a whole lot. White full spectrum LED grow lights contain those red and blue peaks but they look white. Regular LED light bulbs only contain blue and yellow. When blue and yellow are mixed together it appears white. Yellow light also corresponds with the lumens, which is the measurement of how bright light is. Basically, yellow light is how bright our eyes think light is, but has nothing to do with plants. It makes sense that regular LED bulbs mix blue and yellow and mostly leave out red because why use it? plants need it but we don't. The next topic is power an efficiency. Plants need a lot of ppdf. To keep it simple PPFD is the amount of red and blue in the spectrum. Regular LED light bulbs won't have much PPFD. Grow lights are also typically 15 watts or higher with a very focused spectrum that has high amounts of PPFD. Your regular LED light bulb from Lowe's is probably only 3 watts, And the spectrum is mostly yellow So it has very little PPFD (only what is there from the blue). that means even if you find a regular LED light that's 15 watts it won't be nearly as efficient as a grow light that's 15 watts. Now if you have a houseplant, I would recommend a white grow light. You want something to match your decor. The trade-off with a white grow light is slightly less PPFD efficiency compared to a red and blue light. but you're talking only about a 10% difference if you're going with a high quality company. It could be a lot more with low quality brands. If you're growing plants in your basement or in a greenhouse, go with the red and blue based lighting. Those produce higher amounts of PPFD for the same amount of power consumption so they have much higher efficiencies. You wouldn't use regular white light for plants. Some old school greenhouses still use high pressure sodium or similar bulbs. These typically start at 300 watts. They aren't efficient by any means, but so much power is bound to grow anything. That high amount of power also penetrates leaves deep into the canopy for massive, crop producing plants. Hope that helps. A lot of bulbs have exaggerated numbers and are made really poorly. It's truly a market that's starting to be flooded with low quality Chinese products. Plant lights are on for 12 to 16 hours a day, and LEDs and the electrics have to stay cool or they fail quickly. Lastly, you should really find photos or a video of the product. A lot of bulbs that claim to be white are still extremely blue or pink And will look terrible in your home. Good luck! If you have any other questions, let me know.
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I use an LED light as a grow light. From a functional standpoint, I don’t think there is a huge difference if your goal is simply to keep your plants alive. this video from Betsy Begonia helped immensely . I suspect that marijuana growers tend to dominate a lot of the grow light information available online and that’s just way too much for most of us.
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Reddit
reddit.com › r/houseplants › overwhelmed by information about grow lights
r/houseplants on Reddit: Overwhelmed by information about grow lights
June 7, 2024 -

There’s a lot of info out there that is probably really helpful but that i don’t actually understand. Like you need growlights because they have wavelengths that ordinary lights don’t have. But also that any light with about 65000k should be good so what i am wondering i guess is can i just use whatever floor lamp with a 24W CFL globe that has a colour temperature of 65000k. Or do i have to use a special growlight. If so what growlights do you guys use because when i search online i can only really see temu ads which i don’t want so i don’t know where to buy from and what’s reliable and on top of that, what is actually available in Australia… I’m a bit overwhelmed by all the different things that need to be considered… help…

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Give me a sec I'll edit this comment, I've made a superb one some time ago I just need to find it Edit 2 coming, answering your questions more specifically. I don't know what's available in Australia, but try to find the brands I mention below if possible, or similar ones in terms of how they look. The bottom line is that most of them are knockoffs of each other... When you see color temperature, and I'm guessing you mean 6500k, not 65000k (I'm not sure if that exists). These numbers relate to the warm to cold color spectrum: cold (blues) is the higher numbers, and warm (reds/yellows/oranges) is lower numbers. The blue spectrum relates to vegetation (roots, leaves, stems), the red relates to blooming (quantity and quality of produce and flowers). In the bottom line white is the combination of all visible light wavelengths. It's important to keep in mind that plants want all light wavelengths, ultra violet to ultra red, including the green wavelengths. Any article that claims differently isn't trust worthy. Same goes for any product that's blue/red/purple and the like, you want a proper full spectrum light. Fun fact: I learned a lot of the above during my military service (I was a tank technician, I handled optics among other things). Special Grow Lights? Yes. I'd say so. Get a proper grow light and some way of making it automatic (smart or timer based plugs are awesome for that), and you won't have to think about it, or worry about leaving them on when on vacation, etc. Edit: I made this comment in the context of adeniums. They need a lot of light. If you want pictures, let me know, I'll post some. So this part is far more technical, and discusses hardware rather than lightware (I'm puntastic like that) To measure light, download an app similar to Lux . These apps are usually within ±5-10% of the accurate measurement, depending on the light sensor in your specific phone (my Samsung 20 plus is about 3% off from my light reading device when I point them at the same source). If you want a professional device, they run from pretty cheap to holy crap. I'm using this Btmeter Light Meter. It's decent, nothing special though. I've had mine for a 4 years, I think it's starting to show its age but only slightly. If the app says anything short of 10,000lux, you need more light. EDIT: I accidentally mixed up the inches and feet symbols! All of the below is in inches, NOT ft!!! My grow lights recommendations, based on the ones I own: Distance is an estimate, lux is based on the app above. Mars Hydro - SP150. Best one I have. >20k lux @ 8'-10'. Good light spread. Good color spectrum. Strongly recommended. I bought it over 3.5 years ago, and excluding one panel dying about 6-8 months ago, it works amazing. SpeePlant LED Grow Lights 1.4FT - I have two. 15k lux @ 8'. Ok light spread, good color spectrum. Got em a month 3 months ago. So far so good, and good value for money (so far). CANAGROW 300W COB LED Grow Light - very concentrated light, measured it at >30k lux @ 15'. Good color spectrum. Used for about 18 months, works well in the specific spot it points at. Good for 1 or maybe 2 mature adeniums. SunBlaster 12" Prismatic Lens LED 12W HO Strip Light 6400K - 7000 lux @ 6'. Low light spread, reasonable color spectrum, but a bit heavy on the blue). Not dis recommended, but I won't be getting another. Kihung LED Grow Light, 2FT LED Grow Light , Barrina LED Grow Light, 2FT LED Grow Light . Measured: ~8k lux @ <6' when they work together as a large group and placed close together. Low light spread. Ok-ish color color spectrum. Not recommended at all. The same manufacturers with different brand names. LED Grow Light for Indoor Plants measurd: <8k lux @ 8'. Ok-ish color color spectrum Not recommended at all. All of my lights are used 13 hours a day. I use smart plugs to turn them on and off, I really recommend doing that, or timed outlets if you prefer, that's also a good idea. Reputable brands I know are considered good: Mars Hydro, Spider Farmer, and Horticultural Lighting Group (Sometimes they go by HLG) are all good. There are other similar brands around as well. When it comes to meeting your plants' need for photosynthesis, just remember: follow the light! ;)
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Horticulturalist here with a lot of experience with grow lights. Here’s the deal, as long as you’re not running an indoor farm and trying to maximize yield, they’re all going to be just fine. If you want to get more specific, you need to be concerned about what wave length a light puts off, basically what colours is the light emitting. You want red and blue light. But seriously just about any grow light is going to be fine. For my house plants I usually use white grow lights because I find the red/blue ones harder on my eyes.
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Reddit
reddit.com › r/gardening › do led grow light strips work?
r/gardening on Reddit: Do LED Grow light strips work?
January 17, 2022 -

Got some of these for Christmas and just wondering if they are actually any good. I got two different strips, the ones linked above show that they are 12W and the others that I already have hooked up are only pulling 8W. Is that enough to accomplish anything? 8W seems like it's not gonna do much to get seedlings to grow. Maybe if I cram both strips onto my one board for 20W total?

My desire is to have a space to grow starts from seeds so I also got some warming mats. Are these LEDs good for this? I'm not trying to indoor garden, just get some starts going so I can transplant to my garden outside. I have basically no good windows where I can do this indoors without some extra light.

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Reddit
reddit.com › r/vegetablegardening › help with grow lights?
r/vegetablegardening on Reddit: Help with grow lights?
February 18, 2026 -

Hey all! I'm hoping for just a lot of general advice.

I have a bad habit of killing my seedlings, which is not exactly new. (I have killed SO MANY plants in my life! 😅) But one of the issues I've noticed is that I've been crowding them into the windowsills to try to get them enough light, and a) that puts them out of sight, so I forget about them--I'm adhd af--and b) they get just really leggy.

I figure setting them up with grow lights in my bathroom is a potential solution to both. Space and cost are both issues, but also just general ignorance: I've never used grow lights in my life, and I don't know where to start.

Any general guides, product recs, advice, do's and don't's, etc that y'all can provide me would be very helpful. What do you know?

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Reddit
reddit.com › r/houseplants › let’s talk grow lights!
r/houseplants on Reddit: Let’s talk grow lights!
May 3, 2020 - Most LED bulbs out today are full spectrum and therefore sufficient for plant growth (you can buy a cheap spectrometer and test LED bulbs you already have). I have a NE facing apartment that gets almost no direct sunlight and very little indirect ...
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reddit.com › r/cactus › do's and don'ts of led grow lights
r/cactus on Reddit: Do's and don'ts of LED grow lights
July 12, 2021 -

I recently found out my plants weren't getting enough sunlight which was leading to weird growths (etiolation). I've purchased an LED grow lamp but wondered if there's any important do's and don'ts when it comes to grow lamps?

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Ok I’m an experienced user of grow lights. I have ~200 plants in my life and a sizable chunk live under lights for at least half the year. So as with any Reddit advice take what I say with a grain of salt, those are my qualifications. I’m not here to throw punches but I think there is A LOT of bad information out there. I think it’s really easy to focus on what kind of light you have, how expensive, how much wattage, the spectrum, etc etc. I think those things can be important, but they are much less important than having an understanding of the underlying needs of the plant. Plants need quite a lot of light. Cacti especially are from desert habitats and they require intense light to grow healthy and compact. The thing that is VERY important to realize is that the light that actually matters to the plant is the light that hits the plant. A big problem is that people focus on the spectrum, wattage, and $$$ you spent before thinking of that basic fact. You can buy a $700 Mars hydro but if it’s placed 10 feet from your plants up against a black background it won’t work. Likewise any old light can grow a plant, and you can be quite successful with a low power bulb if it’s placed close to the plant with reflective surfaces surrounding the grow space. It’s important to appreciate the differences between grow lights and the sun. The sun is super super bright, but also very far away. The sun also moves through the day. As a result of these things plants outdoors are basically washed in photons coming from all directions. Light hits them directly from the sun, but also as it is bounced off of clouds and other things in the environment. The result of this is that the whole plant gets even lighting across all its tissues. When you make your living eating sunlight this can be important. Grow lights don’t work that way. They are uni-directional, not that bright, and they are placed close to the plant. Because of the inverse square law any energy that propagates out from a point in space will lose intensity exponentially with distance. This means that a plant leaf growing up close to the light could be getting 10 times the light as a leaf only a few inches below. The unidirectional nature of them can also lead to shadows. Often inexperienced growers don’t realize what a big problem these are. If the plant tissues are not getting light it cannot grow! Dealing with those issues is the real challenge of grow lights. My advice is the following: Buy a light that is appropriate for the type and amount of space you want to light. Some lights cover a wide area with lower intensity light and might work perfectly for lighting a shelf where the lights are only a few inches from the plants. Other lights have lenses and shine deep, and could be ideal for setups where the lights are far from the plants. Try to play with angles and distances in order to get things fined tuned. Remember that with grow lights the light levels fall of exponentially as you move away from the source. The implication here is that changing the distance to the light by only a few inches can drastically change the light levels available to the plants. Watch how the plants respond and make fine adjustments. Move individual plants out of shadows. I often raise plants up on an upside-down pot. Use reflectors! So many people mindlessly install lights such that a majority of their output just flies out into the room and heats up the walls and furniture. I would highly recommend surrounding your grow set up with a reflective material. Mylar is the best but even aluminum foil works well. At the very least angle your plant light back against a white wall or something. I added reflectors to my setup and it’s the single most helpful improvement you can make when working with lights. By bouncing all the waste light back onto the plants you radically improve the brightness they experience, and it really helps eliminate shadows while hitting the plants from more angles. Don’t be that guy who has a light angled out into the room or who has dark materials surrounding the plant. Spectrum isn’t nearly as important as people think imo. Plants have lots of accessory pigments and actually absorb in a wide range of frequencies. Most grow lights are just lights that are kinda obnoxiously bright. More bright than what most people want in the average home. I prefer full spectrum for looks. My favorite brand is sansi, they make some nice bulb style lights that fit in any standard light bulb socket.
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I have this one purchased via Amazon/USA. Monios-L T5 LED Grow Light, 4FT Full Spectrum Sunlight. It also comes in shorter lengths. https://www.amazon.com/dp/B07QCT6Q4T/ It's strong enough to induce color change in succulents. •○• Here is my Instagram post...various slides...showing it set up: https://www.instagram.com/p/CChnqFBB9CE/ Slide 8 for another view\ https://www.instagram.com/p/CNY6DsuJ1Cr/ I have found that plants eventually need to be hardened off to about six to eight inches away. Anything further than that will not be effective enough to stave off etiolation, especially in succulents/cacti. •○• I just purchased a second one and installed it two days ago. I cannot stand those pink/blue lights. 😆 •○• Update: 27 Sept 2024 • I'm now up to ten, 4-ft units of the same light. • I have had Mammillaria (2), Echinopsis (1), and Lithops (many) bloom under these grow-lights. • The distance to light for the cacti are around 2 to 4-inches. • I've managed to scorch chloroplast in the Echinopsis because I didn't incrementally adapt the plant to the grow-light. Three years later, the chloroplast has not fully regenerated in that area. Lesson learned. 🥲
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Reddit
reddit.com › r/explainlikeimfive › eli5: can plants get their needed "sunlight" from artificial (e.g. normal led room lights) source? whats the difference between artificial light and sunlight from the point of view of the plant?
r/explainlikeimfive on Reddit: ELI5: Can plants get their needed "sunlight" from artificial (e.g. normal LED room lights) source? Whats the difference between artificial light and sunlight from the point of view of the plant?
March 26, 2019 -

So my house is "north facing" and doesnt get much light in some rooms but I like to have plants around (and be able to keep them healthy). I'd like to understand in simple terms whether they can survive and thrive with normal artificial light most of the time (e.g. there are a few windows but not always much light through them). If I'm at home during the day I would usually have an overhead light on, in order to have enough light to work at my computer (or whatever). Other than in the height of summer.

Bonus question, can I use "colour adjustable" (e.g. Philips Hue which allows choosing any colour of light using its 'app') to help the plants?

edited to add: I'm primarily asking about normal household lighting with possibly some additional lamps, rather than an "intensive growing" scenario.

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Reddit
reddit.com › r/houseplants › led grow lights bad for me?
r/houseplants on Reddit: LED Grow Lights bad for me?
August 7, 2023 -

Question! I have a new desk setup with my plants on a windowsill and my LED Grow lights attached to the shelf right by my desk pointing at the plants, is this harmful for me? I work from home so I’ll be around the lights often. This picture is the current set up.

PS: they’re all in a basement so that window doesn’t provide much light, hence the need for the grow lights!