36W LED Grow Light Bulb

So at this point I have purchased 3 different sizes of Sansi grow lights, 15, 24, and 36W over the past 3 or so years. They are all excellent bulbs, so bright it is annoying to have them pointed at your eyes. I was attracted to the Sansi brand thanks to a few online reviews, especially some that used their own spectrometers to confirm that these give a proper full spectrum including a little UV. I like to think my bird likes it too since she can see UV! I wonder if the UV helps with winter depression?In summary:I recommend the 15W for individual low-light houseplants, like a mini moth orchid, succulent, or mini African violet. I recommend the 24W if you have a small collection of plants. I recommend the 36W if you have a medium collection or want to grow a fruit/veg.. I recommend multiple 36W if you have a large collection or a small tree, but if you have that many plants you probably already know what you are doing. ;)Of note:Of note is that the bulbs do get hot after running about 12hrs a day, so it hurts a little to touch the diodes directly, and do not put them in lampshades that would restrict airflow. They do not run hot enough to affect the plants whatsoever though. I have to put my hand 1 inch away from the diodes before my hand detects it as being hot. I think the passive vents do a great job of directing the heat up and away rather than down towards the plants.Also of note is that there is an audible coil whine when any of the bulbs are on. This is not loud or obtrusive (I regularly have one about 3ft from me when I am studying), but it is noticeable if you have young ears.It is also worth noting that the light cone is fairly narrow/focused, so plants directly under the bulb get significantly more light than those around the periphery. This is not a bad thing; it means more of the light is efficiently being beamed on your plants instead of scattering around the room.Below is a comparison of my personal experience with the 3 sizes:The 15W was excellent for a tall desk lamp with a few mini African Violets huddled around it. It was insufficient for outdoor plants that like full sun such as Egret Orchids.I upgraded to a 24W once my plant collection grew to the dozen mark, so I could have a larger illuminated space to work with. Of note is that this bulb was visibly warmer in color than the 15W or 36W. It reminded me of a nice incandescent bulb's glow. I am not sure if this is a consistent thing with the 24W or if it was just my bulb. Otherwise, the 24W was actually my preference for houseplant use with my personal setup.I bought the 36W for a friend to use in a fish-tank sized terrarium, again, for the wider radius able to cover more plants. It is strong! It would be interesting to see if more outdoor semi or full-sun type plants would be satisfied by the 36W; it is a very bright bulb. As is, my low-light houseplant African violets needed to be placed an extra foot away from the bulb to stop from getting sun burn or bleaching. I would mention that the bulb is quite heavy at this point, so if you are using a flexible goose-neck lamp, make sure it is nice and stiff or it might sag under the weight.Tip:If you have a proper light sensor, it is super handy when setting up your plants around your new bulb. I resorted to the free Arduino Science Journal app on my phone to compare light intensity (in lux units), and using recommended lux levels from google for my particular plants.I get about 22K lux directly ~1ft below the 36W bulb, for example, but about 8k lux ~2ft directly below. I currently have my mini african violets arranged in a ring of ~2ft diameter, about ~1.6ft below the light. This gives them the recommended ~7k lux of light according to google.

Before I write the review, I feel I should give a warning. These bulbs get so hot that you may not be able to touch them with your bare hands unless you give them a few minutes to cool or using a cloth or something to remove the bulb. I have a rattan shade and a white shade that came with my lamp. I removed the cloth white shade so this bulb can have air. I would not advise using this light with a shade that is closed.Ok, so now let's get back to what you would like to know.I wanted to wait one week to see how my plants responded but last night my prayer plants were clapping.I purchased a rattan grow light floor lamp and a rattan hanging grow light, one with an 18w and the other with a 25w grow light bulb. Though the lights were "bright," I had no idea how not bright these bulbs were.Last night I moved the lamp with this bulb into another room to give my plants some extra light since it was gloomy all day. This north facing window gets great indirect sunlight on most days but at times the room can remain dark. Since I got my first bulb, I have been concentrating more on the plants in the upstairs loft and downstairs living room. A few hours after putting the lamp in the room, my Marantas were standing straight up!!! My plants don't usually move and if they do, it is very little. I read the leaves stands straight up at night but mine doesn't do that, and considering it did it in a bright grow light setting has me scratching my head. I could not believe it!This morning, the plants were flat so I turned on the 25w bulb that came with the lamp. Not much was happening so I put the lamp with this bulb back in the room. In one hour, the plants started moving again. I think they did better last night because the shades were down and the light was not diffused by daylight. It was diffused this morning with gloomy daylight but the plants responded! I love this so much that I ordered the 40w with remote that I will use in the loft and living room and add the lamp in the room with the Marantas. I know people have said how dangerous these bulbs are so I will never leave them on while I am gone, but unless you get a dud when it comes off the line, and use the bulb with good ventilations, I think you will be ok!

I had this bulb for a few months before it started flickering. I use these as a grow light so they are on for at least 12hrs per day, every day. I was outside of the return or exchange window on Amazon so I thought ah what a waste and stopped using it.I’m a big fan of SANSI 40w bulbs that look like this. I have had two of those working for a long time now, so I was disappointed this one did not last.I was looking at the company site one day and saw the support link. I thought why not reach out? Customer support replied and they went ahead and sent out a replacement bulb without charging me! I have it up now and so far it is working great. Hopefully it will last long too.I do wonder if it is this 36w that maybe does not last or if it is just the one bulb I received? Either way, I am happy Sansi replaced it outside of the 30 days. I will definitely be buying all of my grow lights from them from now on. They stand by their products.My one recommendation would be to not use any hoods on these. They are meant to dissipate heat based on their unique hollow looking design. They do get rather hot while in use but the heat generated is great for my plants in winter. Depending on how you set this up, it will not hurt your eyes unless the beam is aimed at you, which I don’t recommend for extended periods of time since it is strong.

I have been using this light for maybe two weeks. Unbelievable, it has already burnt out. Wow. To all prospective buyers, beware because you are wasting your money on this product. I have to believe there are better lights out there that last longer than two weeks. Also, I have been receiving horrible products through Amazon lately. I don't know if anyone else has noticed this but Amazon is starting to sell some lousy products.I am changing my review. These guys have been more than gracious in dealing with my problem. The problem seems to be that I am using a socket on a dimmer. After replacing the bulb one time they are replacing it a second time. It seems it was my mistake for putting the bulb in a socket that is a dimmer. I totally recommend this company because they stand behind their products and are willing to fix any problem even when it is the purchasers mistake. They deserve 10 stars.

Can’t really comment on how well this grow light works since I’ve only been using it for two days, and I will update my review once I’ve used it enough. My current review is based on the good quality of the bulb itself, I also like the broad spectrum and the brightness, although I do wish it’s dimmable to account for different light needs. I was able to put the bulb in my rattan floor lamp and it helps dress it up a bit since it’s not necessarily aesthetic on its own.

Not sure if I got faulty ones, but both bulbs blew within almost two months. I purchase these and put them on a hanging light and they both went out. I thought it was the cord so I replaced it and nothing. Swapped bulbs and it worked. Contacted Sansi so we’ll see what happens. I love their other products so this makes me a little sad.Edit: they’re sending out two new bulbs!

This is a great product! My home has very few windows with only a little light coming through, so grow lights is a must for my plant babies. I have bought other brands of grow lights of lower wattage, some which can be seen in the bottom of the photo, and they have nothing on the Sansi 36 watt grow light. Within a week of using this light, I have seen my plants go from content to thriving! Most notably, my monstera deliciosa is sprouting a new leaf and its aerial root that I had placed in a moss pole has grown nearly 5 cm. I’m definitely going to want another light from Sansi. Until then, my cart of plants is going to be overcrowded around this bulb🤣The bulb does not overheat. I am able to touch it and move it if necessary without burning myself. It is one of the brightest lights I’ve ever seen, and it makes the colors of my plants pop whereas other lights I have do not.

I have a small 4 sq/ft area indoors that will be used to eventually grow 3 plants, all Willow Leaf Ficus Bonsais (that's their common name). The plants range in size, but none of them will take up more than 1 sq/ft individually, and the one in the picture is much smaller than the other two that will be put under the lights later. For now, there is a single, quite small Ficus (as you can see in the picture). They love light, the more the better.My setup includes 2 Sansi 36W full spectrum 4400K bulbs and a single 60W 5000K corn LED bulb (about 9" long). The Sansi bulbs are white with a bit of a yellow cast to it, indicating the larger percent of red spectrum than blue (as the spectral curve shows). However, there's a nearly perfect amount of blue for growing lots of foliage (not to mention the rest of the spectrum which is very important also). I will use them to grow foliage, seeing as how my plants don't bloom. The other LED, a 60W 5000K corn bulb will be hung vertically in order to fill in the gaps with high quality light (leaning more towards the blue spectrum) hitting the sides and lower branches of the trees.My initial thoughts upon receiving the bulbs and powering them on are first, are that they are quite heavy and extremely well built. I understand the price since it is a full spectrum bulb (with the spectral curve and data to prove it) and has very high build quality. Upon powering them up, they comes on immediately to a color that is slightly more yellow than I expected, but looking at the spectral graph, it makes sense, due to more reds than blues. Both bulbs are identical in build quality and color of light.Seeing as how I'm only using one Sansi bulb right now along with one small Bonsai tree, I'll give you my observations with regards to light output based strictly on lux. I have an app on my phone that measures lux. Granted, I know plants use energy based more on PAR, a full spectral curve, etc., but the amount of lux still gives me an idea of how bright the light is in certain areas compared to other areas, but it definitely doesn't tell the full story of how it affects plant growth.My trees are fast growers for Bonsai (meaning they still don't grow fast compared to a sunflower, etc.) and love full sun outdoors. Unless you are growing plants that don't require much sun, (such as houseplants, seedlings, cuttings, etc.) I personally wouldn't hang it 20" from the plants, as that seems a bit far to get the excellent growth I require. I measured the lux directly under the LEDs, above, below, and to the sides, at various distances from the bulb. For rapid growth, I wouldn't count on this light to cover 4.2 sq/ft and still grow extremely quickly. Don't get me wrong, it has decent light coverage at 12" and 20" away, but getting it to around 6" will give you massively more light if you are inclined to do so, especially for flowering plants or plants that generally require huge amounts of intense light. My current light in the picture is 5-6" from the top of the Bonsai. The light intensity at that distance is extremely high.With three plants I'll use my 2 Sansi 36W lights directly over the 2 larger plants when I bring them in (at 6-12" away depending on the coverage). The smaller Bonsai (pictured) will get less direct light from the 2 Sansi bulbs and direct side lighting from my 60W vertical LED. I have a total of 132W of LED lighting in a small area that will allow the plants to grow at their absolute best and fastest. One of the Sansi 36W bulbs would do okay for the three of them. 2 of these bulbs would do quite well, I'm sure. Adding the vertical bulb will really allow every part of the Bonsai trees to grow extremely well and to their potential. I realize, however, that this is total overkill for most people.Final words: This is a nice light. If hung at 12-20", you'll be giving enough usable light to cover a large area, but don't expect incredibly fast growth from all types of plants. When used at about 6-10", you'll be giving your plants tons of light, with the parts of the plant(s) directly under the LEDs getting BY FAR the most light. These LEDs don't spread wide. They are very focused. I like that fact and use this to my advantage. In my grow area, my three bulbs will be giving huge amounts of light to three plants coming from every angle. For those who don't need tons of light, this light will absolutely cover the space that it is advertised to cover. Verdict- 5 stars.Oh, and lastly, these bulbs give off impressively little heat and no noise, so using them 5-6" from my plant does not pose heat issues nor any light bleaching, and of course they are silent. I have a small oscillating fan on low to give airflow to the plant, but even without it, I can touch the LEDs after they've been on for 10+ hours straight. They're warm, but not overly hot to the touch and this is with simple passive cooling! Awesome lights!Update 1: My Bonsai, which tends to drop lots of leaves when taken from outside to inside or has any change in environment, hasn't dropped a single leaf. That comes down to the nice indoors temperature, but mainly the light, which is giving it everything it needs. I'll update further as these lights get more usage. So far I'm very impressed.Update 2: I brought my other 2 (much larger) Willow Leaf Ficus trees inside the grow room (as the new pic shows) for a total of 3 trees. There's a Sansi 36W about 8-10" above each large plant and a 60W vertically hung to get light to all of the foliage under the canopy. 132W of light for strictly vegetative growth in a ~4 sq/ft area. Overkill, maybe? But nothing is too good for my Bonsais, and these lights are doing them justice for sure.Update 3: I decided to rearrange my grow space and have BOTH Sansi 36W lights directly over the same Bonsai tree (about 18" L x 14" D x 16" H). So this tree takes up only 1.5 sq/ft, give or take. Additionally, each light is only 6" from the top of the canopy. The two lights only have 5" in between their hanging locations. This is due to the hyper-focused 60 degree LEDs that put massive light on a small area of a plant, especially when put so close (again, that's what I was after). So now the tree is completely covered in a freakish amount of light. The lux meter I use is actually reading higher numbers than it did when I used it on the plant when in full sun (during July in Southern California).The reason for the change-up is because I fully defoliated the other good size tree, so it doesn't need near as much light right now. The growth I've seen on all three plants has been nothing short of spectacular, and this is in a short time frame, and we're talking about plants in very small pots. The 17 hours a day of direct light helps a lot, but I'm still shocked at how amazing the growth has been. Again, the big tree in particular is growing WAY faster than when it was in 7 hours a day, extremely intense sun. I also have a 60W vertically hung (360 degree light) corn LED bulb hitting all 3 trees, but it's affecting the big tree under the canopy since it's hung much lower. It's clear the massive canopy growth is due to the dual Sansi 36W bulbs. All of the red and yellow/bronze colored leaves are new growth, of which their is a ton, all grown in a very short amount of time.I realize this lighting setup is far from the norm, being so close and having such concentrated light (with no light bleaching or burning at all). However, since I want new growth to fill in a portion of the Bonsai, this is clearly the best and fastest way to get that growth. For all of those wondering about hanging the light closer, 6" is no problem for me (indoor temps are around 75 degrees, canopy is about 80 degrees, and all I have to reduce the non-existent heat is an oscillating fan on low).These Sansi lights continue to shock me with their power since they're only 36W bulbs and they're outperforming the SUN situated how I have them! 5++ stars reconfirmed!Edit: It’s been a while and I haven’t put many hours on these bulbs over the years. Less than 1000 hours on 4 36W bulbs and every single one has had 1-2 diodes go out. I get why the longevity rating on these is so low. They’re nice to use and work well, but their reliability is poor, unless things have changed. I’ll move to a more reliable brand, like Spider Farmer. More expensive, but much better coverage, output, and reliability.

It was defective

I’ve tried many grow lights and this one is honestly one of the best for indoor plants. The light is very bright but still looks clean and natural, not purple or harsh. My hoyas and other tropical plants responded really well with healthy growth and better leaf color. It also doesn’t get too hot and feels much higher quality. Definitely worth the money if you love indoor plants.

Me encantan estás lámparas! Tuve que mudar por un tiempo las plantas del jardín a una habitación separada porque los gatos estaban acabando con ellas :'(Obviamente estando ahí no recibían prácticamente nada de luz solar ( excepto por una ventana pequeña).Compré varias marcas de luz artificial y ninguna les funcionaba, hasta que finalmente encontré esta marca en Amazon.Compré tres focos de 36w pero para algunas plantas eran demasiado potentes y tuve que alejarlas un poco. Pero para las plantas que requieren más luz estan perfectas. Incluso las plantas con flor empezaron a florear de maravilla, mejor que cuando estaban en el jardín.Sin duda una de las mejores compras para plantas en cuestión calidad-precio ;)

Lo compré porque en mi casa no entra casi nada de luz y me gustan mucho las plantas, algunas se me murieron y las pocas que quedaban dejaron de crecer, se etiolaron y en general no se veían bien. Ya llevan aproximadamente 20 días y ya presentan retoños, se ven más verdes, con brillo y las que tienen manchas más claras se están resaltando.Solo hay que tener cuidado de no exponerlas demasiadas horas porque se pueden quemar un poco las hojas o como en mi caso, que necesitaron hacer el cambio más progresivo.Lo único que no he podido evaluar es el consumo energético, pero vale la pena ver bien mis plantitas

I've been using the Sansi 36W grow bulbs to keep my plants healthy for over a year now. It does a good job when compared directly to higher priced GE grow bulbs. For the price it's a good value.