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Mars Hydro TSW 2000 Full Spectrum 300W Dimming LED Grow Light

Availability: In stock

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Regular Price: US$259.99

Special Price US$244.99

  • Buy 2 for US$242.54 each and save 2%
  • Buy 3 for US$240.09 each and save 3%
  • Buy 5 for US$241.79 each and save 2%
  • Buy 10 for US$239.17 each and save 3%

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Regular Price: US$259.99

Special Price US$244.99

TSW2000 is one of our best-sellers as home-use LED grow lights, perfect lighting solutions for 4-8 plants. Affordable price, intuitive yields, and available dimmer and daisy chain function ensure its salability.

  • Wattage - 300w

  • Veg Coverage - 4'x4'

  • Flower Coverage - 3'x3'

The overwhelming choice for most growers applying in grow tent, small room, cabinet & closet, and plant shelves.



 5% OFF- US


Order Processing

 As soon as you place the order, an order confirmation will be emailed to you. This means we have received your order and payment. As soon as we receive your order, we automatically reach out to our warehouse to confirm the product is in stock and is available for immediate shipment. In rare cases, if the product is on backorder or unavailable, we will contact you immediately and ask if you would like to wait for the product to become available or have your payment refunded.

If the item is available for immediate shipment (1-3 business days) we will submit the order for processing and arrange shipment. If the item title shows preorder for your country, your order is preorder. Preorder will ship out in 2 weeks after you placed the order.

 Marshydro reserves the right to notify you of any additional shipping charges necessary to deliver your order. you’d be notified of any additional charges necessary to deliver your order.Extra shipping charges will be decided by the carrier and the products you want to purchase. We will also notify the exact shipping cost in the mail.

You will have the right to modify or cancel your order for a full refund after notified.


Order Tracking

The tracking number for the order will be sent to the email address provided in 36 business hours after the Order Processing . And you can check the updated status when login to your account. Also we will email you later to follow up the delivery time and remind you to pick up the package in time if any unexpected situation happens. So pls make sure your mailbox and phone are available,and care about your order within 7 days.So you will not miss any news about the package.

If you did not receive a tracking number by email or need to confirm the tracking information, please contact us at [email protected] .we will reply to you in 12 bussiness hours.If your tracking number not work in 3 working days after you get it,pls email to us.Occasionally there may be a mix-up in the warehouse and you may have received an incorrect tracking number.we will send you the available one.Sometimes special circumstances will delay logistics updates.we will check and feedback to you.



Change order

If you have to change your order after you completed the payment,please contact us ([email protected]) for the first time when you realize that.we will reply to you ASAP and try our best to correct it.Please understand that if the item has shipped from the warehouse,the changing maybe will not success,or there is time and cost increase. 

Anything about shipping policy pls contact  [email protected]


Shipping cost and Time

United States: Shipping fee calculated on check out page(0-120USD);  shipping time 3-5 business days

Canada: Shipping fee calculated on check out page(0-200USD);  shipping time 3-8 business days

Australia: Shipping fee calculated on check out page(0-24USD);  shipping time 4-8 business days

UK: Shipping fee calculated on check out page(0-240USD);  shipping time 3-8 business days

EU: Shipping fee calculated on check out page(0-310USD);  shipping time 3-10 business days

Russia: Shipping fee calculated on check out page(0-4USD);  shipping time 5-10 business days


Seven Warehouses

MarsHydro owns seven warehouse including China,America,Australia,Canada,EU,United Kingdom, Russia. you will need to choose the corresponding store to place your order.choose it from the top right corner of the website home page.



China Warehouse(Factory)

Support orders for the following countries and regions:

Except USA,UK,EU,Canada, Australia,Russia,(where we have warehouses). The other countries' order will be shipped from China. Such as, Indonesia,Japan,Macau,Malaysia,Philippines,Singapore,SouthKorea,Thailand,Brazil,Chile ,Cambodia,Israel ,Iran,Vietnam,New Zealand, Mexico, Turkey...There will be extra shipping and import tax fee(taken by your country’s customs)

All shippments can be made with 3 business days after customers’ confirmation.

There will be import tax which customers need to pay.



America Warehouse

Support all orders in the United States Mainland. Shipments come via UPS or USPS carriers. No import tax.

For Puerto Rico ,Hawaii,Alaska, shipment will from China warehouse and an extra shipping cost will be needed.we will send you an extra shipping quote by email in 24 working-hours after you placed the order.shipments come via UPS or FEDEX carriers.There will be import tax which customers need to pay.



Australia Warehouse

Support orders for Australia.All shipments come via Aupost or Toll carriers. No import tax.



Canada Warehouse

Support orders from Canada. all shipments come via Canadapost, Toll or UPS carriers normally . No import tax.



EU Warehouse

Support orders for 24 European countries: 21 countries of them .(including Germany,Belgium,Luxembourg, Slovakia, Czech, Hungary, Austria, Netherlands, Denmark, France,Ireland, Italy,Poland,Slovenia,Spain,Finland,Latvia,Lithuania,Sweden,Bulgaria,Estonia,Portugal,Romania,Greece,Cyprus,Croatia,Malta, ) No import tax.

ICELAND,ANDORRA,LIECHTENSTEIN,MACEDONIA,NORWAY,SWITZERLAND,UKRAINE,VATICAN CITY, SAN MARINO, Monaco, have different shipping ways. They can be shipped from China with extra shipping fee. We will notify within 24 working hours. Or they can be shipped from EU warehouse but customer need to clear the customs yourselves. We will also notify this within 24 working hours. Customers can choose ways they like. There will be import tax which customers need to pay.

All shipments come DHL or GLS carriers from Germany warehouse(Ireland will ship from UK warehouse). When the item out of stock in Germany warehosue and it is available in UK warehouse,it can be shipped from UK warehouse and a little extra shipping will be needed.



United Kingdom Warehouse

All shipments come via DHL, YODEL, Royal Mail or DPD normally.  No import tax.



Russia Warehouse

All shipment from Russina warehouse for Russia buyersNo import tax.

All shipments come via IML normally.



Your Order Shows Delivered But You Don’t Have It

If your tracking number shows delivered on the shipping company’s website but you don’t have it, please do the following:

• Check the area around your home for the package and ask anyone it may have been left with.

• If the package is not found please call the shipping company’s directly to report a missing you can get the logistics information fastest.

• Pls email to us about it at the same time.( [email protected])

Marshydro can not be held responsible for packages stolen from the delivery address so please be sure to ship to a secure location!If the items are lost, weneed at least 30 days to investigate. so after we provide the tracking number, hope you can follow the logistics dynamics of the items , continue to view our mail about the notification,so you will recieve the items successfully.



Shipping Disclaimers

There are rare and unforeseen events out of our control that may effect shipping times. Severe weather conditions, catastrophic events, or failures by our delivery partners can cause unexpected delays.Most carriers will not ship to PO Boxes. If you enter a PO Box for your shipping address, we may have to contact you for an alternate delivery address.Please note that if you are placing an international order may still have taxes or duties, which you are responsible for.

Secured and trusted checkout with

- Process orders within 24 business hours

- Transport time about 3-8 working days

- Ship from local warehouses in USA, CA, EU, UK, AU, RU

- Tracking number for every order

- 30 days money-back guarantee



Low Energy Consumption LED Grow Light: Consuming 300w and mounted with 704 pcs chips, TSW2000 is able to replace a 400w HPS light while saving 25% electricity energy.

High Efficiency LED Grow Light: With total light output PPF 716umol/S and leading PPE 2.6umol/j, it’s 50% more photon efficient and can promise a 30% more yield compared to the old HPS/MH lights.

Patent Highly Reflective Hood Design: The reflector design on TSW2000 has been patented, which can effectively collect the light dispersed in all directions to improve its light utilization and help plants obtain more light absorption.

Full Spectrum Plant-Preferred Spectra: By the special combination of spectra that emits most light in the 400-700nm waveband, extremely conducive to plant photosynthesis. Adequate IR(730-740nm) is also included in the spectrum to induce bigger buds.

Dimming And Daisy Chain Function Available: With an independent dimming knob on the removable driver, supporting 0-100% brightness adjustment and up to 15 LEDs daisy-chained in series, it provides various light intensity for different plants stages and meanwhile saves energy.

Reliable Certifications And Warranty: CE, ETL, RoHS, UKCA safety certifications approved, 50,000 hours longevity, 5-year warranty, and local after-sales service centers.

Mars Hydro TSW 2000 Full Spectrum LED Grow Light






Additional Information

Additional Information

Core Coverage3'x3'
Max Coverage4'x4'
Chip BrandBridgeLux
Spectrum660-665nm 730-740nm 3000-3200K 6000-6500K
Max Yield2.3g/W
Amps[email protected] [email protected] [email protected]
CertificateUKCA,CE,RoHS, ETL

Write Your Own Review

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Customer Reviews 36 item(s)

Bang for your buck Amazing light. This was my first light and its still running perfectly. Great for a 3x3
Review by Daniel / (Posted on 11/13/2021)
Perfect Love it! Had mine for 6 months now an don't regret buying! Great product
Review by Tre / (Posted on 6/29/2021)
Great Light for a great Price Great results thru Veg and Bloom. I am happy with my purchase.
Review by FreeRangeBee / (Posted on 6/20/2021)
growdaries Я стал счастливым обладателем 3×TSW2000 , Mars hydro the best light !!! Этот свет превосходный как для новичков так и для профессионалов . MARS HYDRO является лидером на рынке . Я как обладатель этого прекрасного светильника и участник сообщества гроверов Growdiaries рекомендую этот лучший свет !!!
Review by Bozhenko Sergey / (Posted on 6/4/2021)
I'm happy with the lamp, it's great, I recommend it to everyone I'm happy with the lamp, it's great, I recommend it to everyone
Review by Michal Giesztoft / (Posted on 5/29/2021)
TSW-2000 is a Great Inexpensive LED Light I have used a Mars Hydro TSW-2000 for over a year and love it. :) You simply cannot beat the performance for the price, and they're even less expensive now. :)
Review by Douglas.Curtis / (Posted on 5/12/2021)
One of the best LED lights on the market highly recommend I love this light I'm going to buy another one very soon in the next few days
Review by Detroit420 / (Posted on 4/24/2021)
One of the best LED lights on the market highly recommend I love this light I'm going to buy another one very soon in the next few days
Review by Detroit420 / (Posted on 4/24/2021)
Excellent grow light. MarsHydro provides excellent products and services. Something you do not find very often.
Review by Joey G / (Posted on 4/22/2021)
Great buy Great Light so far perfect match
Review by Travis / (Posted on 3/30/2021)
An excellent light! An excellent light!
Review by GROUP / (Posted on 3/25/2021)
Excellent quality and reasonable price Bravo, so bright, love mars
Review by Brian Reid / (Posted on 2/25/2021)
Excellent Product and Customer Service arrived on time package intact, brilliant light will get another
Review by bill / (Posted on 8/11/2020)
Super awesome led grow light Wow am super impressed with this light it is super powerful and crazy bright, this is the best high quality light for a great price on the market.. I've got a platinum led xml, and this is just as good in my opinion for half the price. I loved my mars2 900.. have 3 marshydro leds and all have been used for a year on an off so ya marshydro is really stepping it up, I'd say these are the best lights for running full scale rooms due to its awesome coverage and great price point.. light is very well made and doesn't run that hot either like I was worried about.. puts off extremely high par and has dimmers..very happy with the purchase but always am amazon always comes through for me lol..
Review by Andy / (Posted on 8/11/2020)
Super light yet really built well and grows plants like crazy! This light has really impressed me by the overall build quality. There aren't too many lights out there that have this type of design which makes it stand out to me. The light quality it provides is quite impressive as well, all of the plants that I've been growing with this have been thriving!
Review by Wisconsin Wonder Garden / (Posted on 8/11/2020)
Great light Recently purchased the TSW2000 for a 2x4x5 tent used the month of flowering . Buds tightened up Trichomes were better than before
I did remotely place the drivers out side of the tent to keep tent a little bit cooler
I highly recommend this light
Review by Grower George / (Posted on 6/7/2020)
Power cable Hi I haven’t brought the light yet but I’m just wondering how long is the power cable? Many thanks.

Hi Sir, the light are with 2M extention cable and 1m normal cable. Feel free to purchase.,
Review by Ceejay / (Posted on 5/16/2020)
Better then any blurples Tsw 2000 is the perfect light for a 3x3 grow tent! Im so glad I listened to my grow group and switched to this light! The reflection is amazing! It really gets to all corners of my tent! Not liks my Amazon blurples that only shine straight down! So if you haven't already hit that buy button its worth every penny!
Review by Lisa / (Posted on 5/11/2020)
GREAT PRODUCT The lights works 100 percent wow great products to buy T1000 is great I can only imagine how good the 2000 or 3000 powerful little lights for the price
Review by TIMBO / (Posted on 5/5/2020)
If you are looking for a great grow light with reasonable pricing and fantastic customer service, look no further. This light is truly amazing. My first grow light for my first grow. Used it for 4 x 4 grow tent and yielded about 550g from 4 autoflower Northern lights plants. Not bad for a first grow! From seedling to flowering, this light performed exceptionally. Just keep in mind of the light distance and dimmer function. Mars hydro customer service is really good as well. Quite responsive and friendly. I had an issue with one of the driver's dimmer function. Mars hydro sent me a new driver foc! If you are looking for a great grow light with reasonable pricing and fantastic customer service, look no further.
Review by Rashid / (Posted on 4/18/2020)
don't think twice amazing light i orderd the light and was not dissapointed,it came within 24hrs in the uk amazing given the lock down, Marshydro smashing it, awesome light
Review by greenthumb / (Posted on 4/3/2020)
One month in So far so good one month in!
Review by Kingquad / (Posted on 3/17/2020)
Fast delivery, as promised and more. Great lights, got two TS 2000, and my plants are growing perfectly. Had a faulty driver one lamp, and they send me a new one when contacting support.

So far I am very pleased! :-)
Review by iliketo420 / (Posted on 3/13/2020)
You won’t be disappointed Been using the TS2000 for 1 week and my girls are loving it. Growing 9 plants in my 5x5. I think I should have went wit the TS3000 tho
Review by RonRon / (Posted on 3/5/2020)
lack hanging system? I received my TSW 2000 Mars light from eBay yesterday I am impressed with the light brightness and I hope it does the job I am disappointed with the fact that you can't raise the light all the way up it really needs some type of hanging system where you can have it high or low

Reply from Mars Hydro

Hi Toby, did you not get the rachet hanger with your light? If so, you can email us to send one, it is for adjusting the hanging distance. :)
Review by Toby / (Posted on 2/22/2020)
Great product awesome service I upgraded to this light and was not disappointed in any way, it arrived faster than expected and was easy to setup. I highly recommend this light for up to a 4x4 area.
Review by Don / (Posted on 2/20/2020)
Well worth it The arrival of the light I just ordered will be the second TSW2000 that I will be adding to my personal grow.
Review by G.G. GrowGod / (Posted on 1/17/2020)
Amazing Light Great light. Have the tsw2000 in my 3x3 tent and the plants are loving it. Grows huge dense colas. I have a ts1000 in my 2x2 and same results. These lights are amazing.
Review by Helkamaniac / (Posted on 1/13/2020)
Highly recommended I use 2 of them panels and they are superb. Light is super bright and very pleasant for eyes. Most important my plant love it
Review by doominik / (Posted on 11/15/2019)
light very good
Review by garret / (Posted on 8/23/2019)
Great product I love this new light the plants have been responding very very well to it, the only thing I suggest it to have a fan blow on the driver a little bit throughout the day as it gets hot from the light being on 12 hours minimum a day
Review by James / (Posted on 8/16/2019)
Will purchase again. It’s everything you will need... Highly recommended. My wife loves the new MARS TSW 2000 in her garden
Review by Mr / (Posted on 8/16/2019)
Just as expected PERFECT his is as Promised a WHITE LIGHT led it fits in with my T5 Spectrum for vegging and I can throw it in with flower whenever I want. Overall my only problem is there is no ON/OFF switch you have to unplug it from the cords.
Review by Johnny / (Posted on 8/16/2019)
powerful bright light Received it quick. So far so good. I need to order shades it's so bright! I'm definitely buying 1 more I'm so pleased
Review by Toup / (Posted on 8/16/2019)
Amazing product The light is terrific easily set up plug n play. Great product highly recommend!
Review by indoor / (Posted on 8/16/2019)
Soooo bright Product arrived in 2 days. This LED light is super bright don’t look directly at it
Review by Jay / (Posted on 8/16/2019)

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Product Questions

Product Questions

What about buyers from other countries?

For other countries when items ship from China, buyer needs to pay possible duty fee.
And if it is pre-order,we will contact you to pay for the rest shipping cost needed.

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What is included in the package when purchased?

You will get: light+power cord + steel hangers + rachet hangers + instruction and warranty manuel 

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wills the tsw 2000 work in a 32x32x63 tent?

The TSW2000 is 300w, the coverage is 39''x39'' at flower stage, it can perform well in a 32''x32''x63''tent.

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I have 2 tsw 2000w. Would the 2 combined be ok to bloom in a 4x4 area?
Yes, the TSW2000 coverage is 2x4 at bloom, 2pcs TSW2000 perfect match the 4x4 tent
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I bought the ts2000 and i am noticing at 20" above my canopy i am having to turn the power down bc my plants are responding poorly, drooping some but watered properly. Is this nornal? Should i have to turn the power down to veg? Thank you...

The perfect temperature and humidity for your plants are found between 75°-85°F and 50% - 70% humidity, with plenty of airflow to replenish CO2. PH is 6-6.5. You may add more calcium and magnesium than normally needed.

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Do I need to buy any other equipment for the light to work? Can I just plug it all in and install it in my tent?

Hi all of Mars Hydro lights are plug and play design, you don't need to buy other ballast or reflector to make it work. :) 

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Is just one TSW 2000 light suffice for a 4x4 tent?

Hi one of the TSW 2000 is suitable for 4x4 during veg, but if you use the light during flowering, it will be only suitable for 3x3 area. You can try two of the SP 250 or TSL 2000 if you are looking for lights for 4x4 for whole cycle. 

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What kind of drivers are used for the TSW2000? Do they emit rfi?

It is customized UL listed driver, not a famous brand. :)  

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How can I adjust the wattage?

Here is a reference video instruction to help you, please check: 

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What is the recommended hanging height and hanging hours?

During seedling: 18/6 or 20/4; above 30'' 
During veg: 18/6 or 20/4; 18~24'' above canopy
During flowering: 12/12; 12~18'' above canopy

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Recently purchased this light, love it very much, plants grow obviously. The only issue is the panel gets hot, cannot touch it, is this normal? Should I do something?

The TS series are no fan design, so the panel needs to release heat itself. We are using all aluminum meterial for the light body, and all the material are anti-fire, over 90% of the components are UL listed, so the light won't catch fire. Also the heat is under control, won't influence the lifespan of the light. Please don't worry. BTW, the whole room temperature won't increase too much. If you don't like the heat of the light, you can add one small fan above the light, it will help a lot, also during winter, it will not be a problem as well. 

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Is the panel waterproof?

TS is not water proof, please make sure to clean the light now and then in order to ensure its longer lifespane. 

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I received the light, but the whole panel cannot turn on? What is wrong?

Hi TS has two connection side, one is for the power cord, another side you need to plug in to the panel aka pcb board. Please check if you have plug in both sides. If both sides is connected, the light shuold be on. If both sides is connected and the light is still not turn on, please email us for warranty: [email protected] 

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My panel arrives, but the shape is a little changed, help!

The TS series is all aluminum for heat releasing purpose. But at the same time, the alunimnum is soft and easy to change shape during shipping. So the panel might change a little shape when you get it. But they will also be easy to use a hammer or something to return back shape as well. We are also keep improving our package to avoid more of these happen. Hope you can kindly understand. 

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What does TSW mean?

The TSW is the product SKU, the "TS" means Traditional Light Substitute, "W" means the "wide", because we also have TSL, L means "long"

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Can the TS be daisy chained?

Hi, TS cannot be daisy chained 

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How do these lights stand up to 50-80% humidity can they handle the moisture.

Normally we suggest keep the humidity within 50% - 70%, they cannot handle the moisture, so pls not make the grow room so much high humidity .

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Hello I just got my light and just wondering if I remove the blue plastic/silicone coating/film that is installed where the power supplys sit.
The blue plastic is to prevent scratches, you can remove it, also can keep it, no effect on using the light
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I just purchased the TSW2000. Question is the setting for percentage of light use for vegging for the heights recommended . And for flower as well.

Hi Stephen, 

Thank you for your message and concern.Please kindly refer the following details to hang when different stage.Veg: 18''-24'' Flower: 12''-18''.

For the wattage, please use the formula to get the results.Veg: (21--30W)*grow size, Flower: (30--35W)*grow size.Then you could get the wattage value you will need.

Hope this is helpful.

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What is the dimmable wattage range, how low can I get?

Hi Sir, you can get from 25% of the light to 100% of the light wattage, which is around 75w the lowest. :) You can use a screw driver to adjust the wattage on the driver accordingly. :)  

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