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Jump Start JSV4 4' T5 Grow Light System (Stand, Fixture & Tube)

4.2 out of 5 stars 1,376

4'
T5 Grow Light System
Style T5 Grow Light System
Brand Hydrofarm
Color White
Special Feature Full Spectrum
Light Source Type Fluorescent

About this item

  • Ideal for seedlings, cuttings, flowers and house plants
  • Grow seedlings faster with 15-20% more lumens
  • Simple toggle clamp for easy lamp height adjustment
  • Super easy assembly.Frequency 60Hz
  • Internal reflective finish directs more light to plants
  • CE Certified, 48" interior width, Compatible with Hydrofarm's FLT, FLV, and FLP tubes

Customer ratings by feature

Easy to assemble
4.6 4.6
Brightness
4.5 4.5

Product information

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Jump Start JSV4 4' T5 Grow Light System (Stand, Fixture & Tube)


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Product Description

"Jump Start JSV T5 Grow Light System from Hydrofarm The Jump Start maximizes your germination success and is great for seedlings, cuttings, veggies, flowers, herbs, greens, and more. Features a high output T5 full daylight spectrum bulb for faster growth. The cool running design lets you position the light closer for healthier, hardier plants. Grow seedlings faster with 15-20% more lumens. Just pull the cord up or down and slide the locking mechanism to adjust. Simple toggle clamp for easy lamp height adjustment keeps light close to plants. Easy to adjust fixture height Highly efficient T5 bulb and super reflective internal finish. Maximize plant growth – Simple toggle clamp for easy lamp height adjustment keeps light close to plants Save time & money – Highly efficient T5 bulb (with more lumens per watt) and super reflective internal finish mean more light for your plants and less stress on your budget Easy to use – Assembles in minutes Compatible with Hydrofarm’s FLT, FLV, and FLP tubes"

Customer reviews

4.2 out of 5 stars
4.2 out of 5
1,376 global ratings

Customers say

Customers like the ease of assembly of the light. They mention that it's very easy to put together, with no tools needed. They also appreciate the quality, performance, brightness and value of the product. They say that it makes for great starts in the garden, and that it works well. Customers also appreciate value, and adjustability. However, some customers have mixed opinions on sturdiness, and size.

AI-generated from the text of customer reviews

404 customers mention375 positive29 negative

Customers find the hydroponic system very easy to put together. They say it takes under five minutes to put the light together and no tools are needed. They also mention that it's convenient and easy to move around.

"...The item I received was uber-simple to put together, no tools needed. It is quite sturdy - not even a little bit flimsy or rickety...." Read more

"Great little stand. Easy, 'no tools required' assembly, took longer to unpack than assemble. Sturdy enough...." Read more

"...I found this made it super easy to slide them into place. Also made it easy when I screwed up and put one in backwards. D'Oh!..." Read more

"...Also, once I first received this hydrofarm, it was very easy to put together, but the light didn't work...." Read more

330 customers mention311 positive19 negative

Customers are satisfied with the quality of the grow light. They say it's easy to set up and all their seedlings are happy. They also say it makes for great starts in the garden and helps turn their seeds into beautiful plants. Some customers also mention that it'll be great for vegetative stages and has had great success with tomatoes, peppers, cucumbers, and others.

"Great little stand. Easy, 'no tools required' assembly, took longer to unpack than assemble. Sturdy enough...." Read more

"...I put them under this light and BAM! in less than 24 hours all my seeds had germinated and now I have fantastic looking cukes and tomatoes!..." Read more

"...The leafs started perking up again. Now my lavender plant is back outside now that its sunny once again. I do love my lavender plant...." Read more

"...Despite all of this, the product itself is simple and clever and I do not want to discourage anyone from considering the Hydrofarm JSV4 4-foot grow..." Read more

320 customers mention259 positive61 negative

Customers like the performance of the outdoor living product. They say it's simple, effective, and works well. Some mention that the stand works well, is easy to move, and provides good light. Some customers have had the light for 6 or 7 years and are still happy with the results.

"...added the 2' extension and that makes it less stable but works great for my little garden...." Read more

"...This light works great for new plants! TIP: Ignore the directions that say to only have the light on 8 hours a day...." Read more

"...But all the parts fit together and the lamp is working...." Read more

"...Plugged it in and it works great. Not only that, but the light output is very bright for such a small tube. A+...." Read more

223 customers mention161 positive62 negative

Customers like the brightness of the grow light. They mention it spreads out quite well, and provides light in winter to 5 Earthboxes full of vegetables. They say it's functional and easy to use, and that it covers every single cell with daylight brightness. Customers also say it has one of the highest-rated grow lights, uses only 54W an hour, and is highly reflective, assuring the most light possible is directed at their plants.

"...Plugged it in and it works great. Not only that, but the light output is very bright for such a small tube. A+...." Read more

"...The single T5 still provides a good amount of light, but two tubes would obviously be better than one...." Read more

"...I replaced the bulbs and still no light. As I suspected it was the ballast inside the lamp...." Read more

"...The light is super bright, which will make my indoor plants happy this winter and may even take up more permanent residence as I am currently in a..." Read more

199 customers mention145 positive54 negative

Customers like the value of the outdoor living product. They mention that the bulbs are affordable, it's a great investment, and has saved them bundles of money. Overall, customers are satisfied with the quality and design of the light.

"...The Hyrofarm is worth the money. I will be ordering more in the near future." Read more

"...Light bulb is rated for 54 watts so its very cheap to run compared to other grow lights .Con's..." Read more

"...A small plastic device is used to secure the cords, it works, feels a bit cheap but it does work...." Read more

"...a few days ago and am very pleased with the quality and the overall design for the price...." Read more

118 customers mention118 positive0 negative

Customers find the adjustability of the light to be easy. They mention that the pulley action to adjust the height is simple but effective. Some appreciate the ability to adjust it on either side. Overall, most are happy with the adjust ability of the product.

"...The light lowers and raises very easily...." Read more

"...Once your vegetable or flower start to sprout it is easy to keep the light adjusted to proper level...." Read more

"...The on/off switch is on the power cord. The height adjustment is much simpler using a friction/slip knob on a thicker cord...." Read more

"...The rope based fixture adjustment system is simple but effective and was fully threaded and ready to use out of the box...." Read more

294 customers mention180 positive114 negative

Customers are mixed about the sturdiness of the outdoor living product. Some mention that it's completely sturdy in construction, while others say that it wobbles a bit and the legs on the stand are flimsy.

"...It is quite sturdy - not even a little bit flimsy or rickety. The light lowers and raises very easily...." Read more

"...There is a slight left-right wobble and, in this direction, the frame is at its weakest...." Read more

"...get it locked into place if the mechanism does fail Overall the quality is good and it looks good. It is only one bulb so light output is narrow...." Read more

"...In spite of complaints from some, I was impressed by how sturdy the frame appears...." Read more

119 customers mention69 positive50 negative

Customers have mixed opinions about the size of the grow light. Some mention that it fits fine there and only occasionally gets in the way when they have to get it, while others say that it's narrow and only illuminates about 3-5 inches of space.

"...Pull cord works good and locks into place quite easily...." Read more

"...On one of the two strings, the aluminum crimp was too large for the string and it didn't hold that end of the lamp for more than about 10 seconds..." Read more

"This is a good size grow light system with easy pulley for the light fixture. To begin growing my newly germinated seeds indoors...." Read more

"...Its sufficient lit area only fits half of my 6 X 12 cells seed tray ( I turn the try around every day to let every seedling get even light )...." Read more

Great product!
5 Stars
Great product!
Apparently, there are many similar products being sent under this same item no. The item I received was uber-simple to put together, no tools needed. It is quite sturdy - not even a little bit flimsy or rickety. The light lowers and raises very easily.The reason I bought it is that I just can't grow anything outside and would very much like to grow my own lettuces and houseplants indoors hydroponically. Eventually I'd like to grow tomatoes and peppers, too, but I think you have to buy a super-expensive light for those. I'm just looking to start this operation now, so I thought I'd try one of the cheaper lights first. I'll update this review in a couple months to let you know if it worked with this light fixture, and add pics if it did.FIRST UPDATE (Oct 25 2013): I planted lots of lettuces and a few other things hydroponically in 3 5-gallon $4 storage bins from Wallymart, into which I drilled holes in the tops, put in net pots of various sizes, and rockwool cubes. I added a bit of fertilizer to the water - don't know if I was supposed to do that. The lettuces came up in less than 48 hours. They looked a little puny for 2-3 weeks, then took off. I was able to pluck leaves for sandwiches by 4 weeks, and have had decent salads since then, although not every day - maybe every 3-4 days. I also have a pretty energetic-looking cherry tomato plant (Sweet 100 seed). I'm hoping it will produce but we'll see. It's about 6 inches tall. Raising the light is so simple, and you can put one side higher than the other.Cucumber seed and mint and parsley plants growing very, very slowly, and cilantro hasn't done well at all. Green onions are kind of just sitting there, thinking about growing, but maybe not... It will be a learning process, no doubt.I might buy another one, but I'm going to just use this one for awhile to make sure it lasts. I have it running about 16 hours per day. I think the next time, I'll buy one of the 4 light bulb fixtures as this one only has one bulb. But that one bulb is supporting 11 plants growing in water!SECOND UPDATE (Nov. 5 2013) I'm posting pics today. My pics show the side with the tomato under it much higher than the lettuce/parsley/onion side. The tomato fell over today but is otherwise healthy-looking (no tomatoes yet) so I have to figure out some way to prop it up. I think maybe just one of those metal cages with foil on it might work. I'll try it and post further pics. I am enjoying this grow light (and my fresh salads) so much!! I'm ready to move on to bigger and better lights, but wow are they expensive. With this affordable one, you can grow lettuces and herbs with no effort whatsoever, and hopefully more - we'll see! I'll post further pics when the tomato and cucumber do whatever they're going to do.THIRD UPDATE (Dec. 24 2013) So, Amazon has removed all my pics! Too bad as this fabulous light fixture is now producing lovely little tomatoes from an enormous plant! I'm definitely buying more! BUT, I also note the product pic has changed so I don't know if I can still make one side higher than the other - that was a nice feature. The only thing I tried that didn't grow was cukes.
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Top reviews from the United States

Reviewed in the United States on September 26, 2013
Size: 4'Style: T5 Grow Light SystemVerified Purchase
Apparently, there are many similar products being sent under this same item no. The item I received was uber-simple to put together, no tools needed. It is quite sturdy - not even a little bit flimsy or rickety. The light lowers and raises very easily.

The reason I bought it is that I just can't grow anything outside and would very much like to grow my own lettuces and houseplants indoors hydroponically. Eventually I'd like to grow tomatoes and peppers, too, but I think you have to buy a super-expensive light for those. I'm just looking to start this operation now, so I thought I'd try one of the cheaper lights first. I'll update this review in a couple months to let you know if it worked with this light fixture, and add pics if it did.

FIRST UPDATE (Oct 25 2013): I planted lots of lettuces and a few other things hydroponically in 3 5-gallon $4 storage bins from Wallymart, into which I drilled holes in the tops, put in net pots of various sizes, and rockwool cubes. I added a bit of fertilizer to the water - don't know if I was supposed to do that. The lettuces came up in less than 48 hours. They looked a little puny for 2-3 weeks, then took off. I was able to pluck leaves for sandwiches by 4 weeks, and have had decent salads since then, although not every day - maybe every 3-4 days. I also have a pretty energetic-looking cherry tomato plant (Sweet 100 seed). I'm hoping it will produce but we'll see. It's about 6 inches tall. Raising the light is so simple, and you can put one side higher than the other.

Cucumber seed and mint and parsley plants growing very, very slowly, and cilantro hasn't done well at all. Green onions are kind of just sitting there, thinking about growing, but maybe not... It will be a learning process, no doubt.

I might buy another one, but I'm going to just use this one for awhile to make sure it lasts. I have it running about 16 hours per day. I think the next time, I'll buy one of the 4 light bulb fixtures as this one only has one bulb. But that one bulb is supporting 11 plants growing in water!

SECOND UPDATE (Nov. 5 2013) I'm posting pics today. My pics show the side with the tomato under it much higher than the lettuce/parsley/onion side. The tomato fell over today but is otherwise healthy-looking (no tomatoes yet) so I have to figure out some way to prop it up. I think maybe just one of those metal cages with foil on it might work. I'll try it and post further pics. I am enjoying this grow light (and my fresh salads) so much!! I'm ready to move on to bigger and better lights, but wow are they expensive. With this affordable one, you can grow lettuces and herbs with no effort whatsoever, and hopefully more - we'll see! I'll post further pics when the tomato and cucumber do whatever they're going to do.

THIRD UPDATE (Dec. 24 2013) So, Amazon has removed all my pics! Too bad as this fabulous light fixture is now producing lovely little tomatoes from an enormous plant! I'm definitely buying more! BUT, I also note the product pic has changed so I don't know if I can still make one side higher than the other - that was a nice feature. The only thing I tried that didn't grow was cukes.
Customer image
5.0 out of 5 stars Great product!
Reviewed in the United States on September 26, 2013
Apparently, there are many similar products being sent under this same item no. The item I received was uber-simple to put together, no tools needed. It is quite sturdy - not even a little bit flimsy or rickety. The light lowers and raises very easily.

The reason I bought it is that I just can't grow anything outside and would very much like to grow my own lettuces and houseplants indoors hydroponically. Eventually I'd like to grow tomatoes and peppers, too, but I think you have to buy a super-expensive light for those. I'm just looking to start this operation now, so I thought I'd try one of the cheaper lights first. I'll update this review in a couple months to let you know if it worked with this light fixture, and add pics if it did.

FIRST UPDATE (Oct 25 2013): I planted lots of lettuces and a few other things hydroponically in 3 5-gallon $4 storage bins from Wallymart, into which I drilled holes in the tops, put in net pots of various sizes, and rockwool cubes. I added a bit of fertilizer to the water - don't know if I was supposed to do that. The lettuces came up in less than 48 hours. They looked a little puny for 2-3 weeks, then took off. I was able to pluck leaves for sandwiches by 4 weeks, and have had decent salads since then, although not every day - maybe every 3-4 days. I also have a pretty energetic-looking cherry tomato plant (Sweet 100 seed). I'm hoping it will produce but we'll see. It's about 6 inches tall. Raising the light is so simple, and you can put one side higher than the other.

Cucumber seed and mint and parsley plants growing very, very slowly, and cilantro hasn't done well at all. Green onions are kind of just sitting there, thinking about growing, but maybe not... It will be a learning process, no doubt.

I might buy another one, but I'm going to just use this one for awhile to make sure it lasts. I have it running about 16 hours per day. I think the next time, I'll buy one of the 4 light bulb fixtures as this one only has one bulb. But that one bulb is supporting 11 plants growing in water!

SECOND UPDATE (Nov. 5 2013) I'm posting pics today. My pics show the side with the tomato under it much higher than the lettuce/parsley/onion side. The tomato fell over today but is otherwise healthy-looking (no tomatoes yet) so I have to figure out some way to prop it up. I think maybe just one of those metal cages with foil on it might work. I'll try it and post further pics. I am enjoying this grow light (and my fresh salads) so much!! I'm ready to move on to bigger and better lights, but wow are they expensive. With this affordable one, you can grow lettuces and herbs with no effort whatsoever, and hopefully more - we'll see! I'll post further pics when the tomato and cucumber do whatever they're going to do.

THIRD UPDATE (Dec. 24 2013) So, Amazon has removed all my pics! Too bad as this fabulous light fixture is now producing lovely little tomatoes from an enormous plant! I'm definitely buying more! BUT, I also note the product pic has changed so I don't know if I can still make one side higher than the other - that was a nice feature. The only thing I tried that didn't grow was cukes.
Images in this review
Customer image Customer image
Customer imageCustomer image
79 people found this helpful
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Reviewed in the United States on September 25, 2014
Size: 4'Style: T5 Grow Light SystemVerified Purchase
Great little stand. Easy, 'no tools required' assembly, took longer to unpack than assemble. Sturdy enough. I added the 2' extension and that makes it less stable but works great for my little garden. I have this up against a wall and see no problem with it being unstable, if it was in the middle of a room or if you have kids or pets that might cause some concern for stability. Pull cord works good and locks into place quite easily. The locking mechanism is plastic and I could see that possibly failing over time but I will add to review if that happens. It would be easy enough to come up with an alternative method (tying cord around top bar for example) to get it locked into place if the mechanism does fail Overall the quality is good and it looks good. It is only one bulb so light output is narrow. I will probably add a two bulb fixture once plants get bigger and that will test the locking mechanism on the pull cord. I shopped a bit for this and for the price it is perfect for my needs. I will review the extension separately...
Reviewed in the United States on March 30, 2014
Size: 4'Style: T5 Grow Light SystemVerified Purchase
This item arrived in record time (2 days after placing the order in spite of asking for the standard delivery that comes with free shipping offer for non-prime customers). Unfortunately, the bulb was shattered in shipment. Amazon.com offered a rebate on the total cost of my order that made it unnecessary to send the entire item back and compensated for half the cost of ordering the 4-bulb replacement pack (sent overnight mail gratis by Amazon.com and arrived unbroken). It was a great relief, as I already had assembled the frame (packed by Hydrofarm in a separate box) without thinking to first check the second box with the light and housing. In fact, to prevent breakage I was gingerly moving the light box, keeping it in its amazon brown box, all the time upright, in the same direction that it was delivered to my house. Consequently, I did not discover the shattered glass until I took the light box out of its amazon packing and turned it on its side to open it up. Thanks to the great amazon.com customer service, I did not have to go through the hassle of returning anything...

Frame assembly is quick and straightforward. It goes together in about 4 minutes flat, no screw drivers or rubber mallets required. The latter is recommended by the manufacturer but unnecessary. In spite of complaints from some, I was impressed by how sturdy the frame appears. All in all, a neat solution for those not adept at rigging up lighting for early spring indoor growing season or simply do not have the space for rigged solutions. My seedlings, for instance, are growing on the bar in our finished basement.

With 16 hours of light, the jump start system helped (together with heat mats) my seedlings (various squashes) grow 1/4 inch overnight. An added bonus is that about a third of the finished part (abt. 18' x 25') of the basement and the entire stairway up to the main floor glow with a soft white light from 6 A.M., suddenly adding light to the dreariest part of the day!!

I am elated with this product, which also won high marks (as the most economic and efficient solution) in a review of growth lights in a recent issue of Fine Gardening magazine.

However, four reasons prevented a five-star rating. First, the frame's pieces fit together so tightly together, I doubt I will be able to disassemble the product for storage and then reassemble it again in late winter next year.

Second, the directions for the light and housing could have been clearer. For example, It helps to have a dime on hand in order to turn the slots on the housing in a vertical position for bulb insertion. It also was difficult to twist the inserted bulb back into the vertical position. (There is almost no headroom between bulb and housing. After spending a good 20 minutes cleaning up glass shards from the first broken bulb, I also understandably was hesitant to twist too forcefully.)

Third, I have not used it for more than 48 hours, and therefore cannot make a longer-term judgement about growth outcomes.

Fourth, my system is running on a lot of extras (timer and heating mats), not included in a product billed as a larger growth system. To guarantee 16 hours of light a day without having to turn the product on and off by hand, I purchased locally and attached a seven-day timer. (Unfortunately, the corresponding timer for this product (sold separately) was not highly rated. A similar timer at amazon.com had problems with the instructions not corresponding to the boxed product.) I also added heating mats (one Hydrofarm pad and one plain old heating pad set to low, the setting necessary to register the 75 degree temp on the Hydrofarm pad) .

Note, too, I followed the advice of another reviewer. I microwaved for ten minutes my seed starting medium (reconstituted peat pellets). I tweaked the advice just a bit by adding extra water to the bottom of the ceramic pie plate containing the pellets, before microwaving.) I planted in the warm medium, undoubtedly an additional growth stimulant. (I did not soak any seeds overnight, something I routinely do for all but the tiniest of seeds in order to stimulate sprouting). I also have not treated with cinnamon, as the reviewer suggested for damping off, in part because in the past I have used a diluted chamomile tea solution instead. Since no scientific evidence exists for either cinnamon or chamomile preventing damping off, I am aiming through this purchase and the heating pads not only for quicker growth but also for drier soil conditions. After all, it is easier to revive a thirsty seedling, than an overwatered one... So far, so good. The soil conditions are much drier for the seedlings under light and over heat than for a batch I have stowed upstairs, basking in the much warmer kitchen. Do keep in mind that drier conditions also translate into more day-to-day vigilance.
One person found this helpful
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Top reviews from other countries

M Center
4.0 out of 5 stars Four Stars
Reviewed in the United Kingdom on March 23, 2018
Size: 4'Style: T5 Grow Light SystemVerified Purchase
As advertised.
Miguel Mallet
5.0 out of 5 stars This really works ! Don't let bad review fool you.
Reviewed in Canada on May 14, 2016
Size: 4'Style: T5 Grow Light SystemVerified Purchase
I just love this. Don't worry about the bad reviews saying nothing grow or something in that nature. I'm telling you, its not the lighting. Just look at the pictures. It's ridiculously easy to setup with no tools required, really sturdy once setup. Everything you see was started from seed in a Dome and then transplanted in dirt like you see on the pictures. I have carrots, green peppers, watermelon, honeydew, celery, lettuce, beets, cannabis, kale, spinach and EVERYTHING sprouted and grew like there was no tomorrow and still going because right now where I live, its still too cold to bring all this outside so I keep it under these lights and maaaan they love it! Just look!

EDIT: I just ordered a second one as much I'm in love with this thing. I sprouted too much stuff now I'm out of space so I need a second one. It works great!

2nd EDIT: Now it's 2017 and I'm still using the same one and I added one picture. I have Thyme, cuccumber and peppers on that one and all that was started from seed and only under this light. It works. Amazing
Customer image
Miguel Mallet
5.0 out of 5 stars This really works ! Don't let bad review fool you.
Reviewed in Canada on May 14, 2016
I just love this. Don't worry about the bad reviews saying nothing grow or something in that nature. I'm telling you, its not the lighting. Just look at the pictures. It's ridiculously easy to setup with no tools required, really sturdy once setup. Everything you see was started from seed in a Dome and then transplanted in dirt like you see on the pictures. I have carrots, green peppers, watermelon, honeydew, celery, lettuce, beets, cannabis, kale, spinach and EVERYTHING sprouted and grew like there was no tomorrow and still going because right now where I live, its still too cold to bring all this outside so I keep it under these lights and maaaan they love it! Just look!

EDIT: I just ordered a second one as much I'm in love with this thing. I sprouted too much stuff now I'm out of space so I need a second one. It works great!

2nd EDIT: Now it's 2017 and I'm still using the same one and I added one picture. I have Thyme, cuccumber and peppers on that one and all that was started from seed and only under this light. It works. Amazing
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23 people found this helpful
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jennell castillo
4.0 out of 5 stars Great for beginners
Reviewed in Canada on September 24, 2018
Size: 4'Style: T5 Grow Light SystemVerified Purchase
Good product if you are looking to start growing indoors. It's long enough to fit 2 large germinating trays or about 3 large mature plants. Having lights on a pulley system allows you to adjust the height of your light while your plant grows. Depending on what you are growing these are flouresent lights so they might not be the best type of light for your indoor garden. I am growing hot peppers and with the help of a heating mat my peppers are growing much faster. You will need a rubber mallet to help you assemble the frame. Make sure that you place your pieces to make sure the frame is aligned correctly before you assemble it as you cannot deassemble the product with out damage.
One person found this helpful
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Amazon Customer
3.0 out of 5 stars Not easy to store
Reviewed in Canada on April 21, 2018
Size: 4'Style: T5 Grow Light SystemVerified Purchase
These are pretty decent lights/stands, even when assembled with grease, good luck getting them apart to store. Beyond that, no complaints.
Amazon Customer
5.0 out of 5 stars Awesome!!!
Reviewed in Canada on March 29, 2016
Size: 4'Style: T5 Grow Light SystemVerified Purchase
Living in a basement apartment when you are a gardener is a nightmare! But, after purchasing this light stand, our spring dreams are coming true! Its relatively sturdy, there's plenty of room for all of our seedlings, the adjustable light height is a great feature, and it's energy efficiency is an added bonus. It doesn't give off very much heat so we purchased a heat mat as well. With the combination of the two, our veggies are well on their way!