MAXSISUN Dimmable 300W LED Review: Is It Really That Good?

You want to start your own indoors garden but your budget is not that generous.

Do you feel identified? If so, then chances are you have found the MAXSISUN Dimmable 300W LED, because let’s be honest: it is dirt cheap! In a world of grow lights priced in the hundreds (and sometimes thousands), a two-digit price tag really stands out.

However, is it that good? It can be cheap, I know it, but is its performance good at all? This review will let you know so. Just come with me and discover everything about it!

Summary: Why This Cheap Grow Light Is Amazing


  • Perfect Light Spectrum. It may be cheap, but it goes a great job at providing your plants the full spectrum so they can grow optimally
  • Excellent Canopy Penetration. This is key for ensuring that your plants grow the right way
  • Perfect for the Whole Growth Cycle. You can use this light during, seedling, blooming and flowering without problems.


  • The fans are noisy
  • It may not have enough power for some people (for example, using this light with tomatoes will have a decent effect, yet not extraordinary)


For being such a cheap grow light, it is surprisingly good. It includes the key features for making your plants grow fast, healthy and strong: an excellent spectrum and great canopy penetration.

However, what about the coverage? One light would not be enough for a big grow tent, but it is enough to cover an area of 3.5×3.5 ft. at 24” high. That is for the vegetative, but during the flowering it is reduced to 2.5×2.5 ft., so consider this.

It is also efficient, because it replaces a 250-watt HPS grow light while maintaining energy consumption at 142 watts.

The unique downsides are that the fans can be very noisy, and it may lack enough power for some plants. However, if your garden is not so big and requirements are not that demanding, then the MAXSISUN Dimmable 300W LED is what you need.

MAXSISUN Dimmable 300W LED Grow Light 12-Band Full Spectrum Veg and Bloom Dimmers for Indoor Greenhouse Plants
108 Reviews on Amazon
MAXSISUN Dimmable 300W LED Grow Light 12-Band Full Spectrum Veg and Bloom Dimmers for Indoor Greenhouse Plants
  • MDR300 compares to traditional 250 watt HPS/MH while consuming only 140W±3%!
  • Its strong, durable and compact reflector magnifies PAR and increases canopy penetration by up to 150%.
  • MAXSISUN LED stimulates plants growth by providing an optimized full spectrum specifically to enhance metabolic processes.
  • The dual-dimmers will help plants at all stages of their growing life-cycle to ensure you get the best yield possible.
  • A 2-year warranty (US based after-service center) plus 60-day hassle-free return guarantee.
If your budget were limited, then I would recommend you to buy this grow light. It gets the job done and I have to say that it does it very well. Therefore, just click the button above to order it today:

Ok, now it is time to give it a proper review, so you can know all the little yet important details about this grow light.

Complete Review and Analysis of MAXSISUN Dimmable 300W LED:

Now let’s get down to details and find out everything that makes this growth light great.

First off, this light is very powerful. Therefore, you need to be careful during seedling and with young plants, because too much power will kill them. The easy fix for this is to hang it at 30” high. That will solve the problem.

Many happy customers are satisfied with this growth light, because it works perfectly well during all growth stages. Thanks to it your seeds will germinate quickly, because thanks to the generous light spectrum, they will get the right proportion of IR and UV light they need.

It is equally good during blooming and flowering, because again, it provides your plants with the perfect ratio of UV and IR light, so they can develop to their maximum potential.

Another major advantage is that it does not overheat. The unique problem is that fans can be noisy, but for the price you cannot really complaint.

MAXSISUN Dimmable 300W LED Grow Light 12-Band Full Spectrum Veg and Bloom Dimmers for Indoor Greenhouse Plants
The thing you need to take in consideration is that due to the lack of power for certain plants, it may be best used as a supplemental light. If you are a beginner, then you will have not to bother with this, but if you know what you are doing, then take this advice.

Amongst other cool features, you can find the following:

  1. Great heat sinks in order to keep the grow light running smoothly and cool
  2. You can use a daisy chain with it, unlike the GoGrow V3 Master Grower LED Grow Lights
  3. You can use the dimmers to regulate the intensity of lights, which is perfect for customizing it according to your own needs and the growth stage
  4. You will not spend tons of electricity while using it

Can you already see why so many people love this grow light? It is because it is affordable and offers tons of value in return. A real no-brainer!


Now you know pretty much everything about this grow light. Remember that it comes with a 3-year warranty and the customer service is quite good.

Want to get it? Then do not wait any longer and click the button below to order it today!

Buy from

Doubts or questions? Just let me know in the comments!

Read more:


Bestseller No. 1
HONORSEN 600W LED Grow Light Full Spectrum 2x2ft Coverage Remote Control Dimmable Grow Lamps with Timer Plant Light for Hydroponic Indoor Plants Veg and Flower (152Pcs LEDs)
  • 🍀【HIGH EFFICIENCY ENERGY SAVING】This 600W grow light has 152pcs LEDs with a larger irradiation area, provides more light output and better light penetration. High energy efficiency with 2.5 umol/J, light output PPFD value is 656 umol/m²at 12”, and consumes only 65W! Veg footprint is 2x2ft, Flowering footprint is 1.5x1.5ft.
  • 🍀【DIMMABLE AND TIMING FUNCTION】The intensity of light can be adjusted from 0% to 100% according to the needs of plants. This grow lamp can be timed to 4,8,12,16 hours with memory function, which can automatically turn on and off everyday without manual operation, very convenient. The remote control design supports unified dimming and timing for multiple lights, especially beneficial for large-scale indoor planting and commercial planting.
  • 🍀【OPTIMAL FULL SPECTRUM GROW LIGHT】The leds are all new technology SMD leds. The growing lamp contains 3000K, 5000K, 660nm and 730nm, ideal for indoor plant from veg to flower growing. Uniform canopy penetration to maximize higher yields and crop quality, much better than traditional HPS grow systems.
  • 🍀【NO NOISE AND LOW HEAT GROWING LIGHT】No additional fan and zero noise. This led plant grow light used large areas of aluminum heat sink, which can speed up the heat dissipation, making the ambient heat very low, so you don't have to worry about it will burn or damage your plants.
  • 🍀【PROFESSIONAL SERVICE】3 years warranty plus 30 days satisfaction or return guarantee. Honorsen is a professional LED Grow Light manufacturer with strong R&D team and many light tester. If you have any questions, please feel free to contact us, we will reply you within 24 hours with professional service. (Please note: The remote control and thermometer are not include batteries)
-$5.00 SALE OFFBestseller No. 2
Led Grow Lights,300W Led Grow Light for Indoor Plants with 4 Dimmable Levels 3 Modes Timing Function,Indoor Grow Lights for seed starting,Hydroponics Growing Light, Multiple Panels Can Be Conn
  • 【Led Grow Lights with Cycle Timer】MSMKEJI led grow lights for plants has a built-in cycle timer,and there are 1-20H timer setting options For Your Choosing.The led plant light for indoor plants will automatically turn on every day as your setting, Even you're on the travel, These full spectrum led grow light will still take good care of your plants every day!
  • 【3 Modes & Rremote Control】The Led Grow Lights for Indoor Plants with 4 Dimmable Levels 3 Modes Timing Function cater to all of your all needs,bringing an excellent use experience!This plant light has more Red&Blue light create an improved environment for plants to prosper. The remote control can be used to adjust the mode,timing and brightness of the led grow light,Extremely intelligent,convenient!
  • 【Full Spectrum LED Grow Lights】 100% Premium.This plant grow light for indoor plants contains a optimal spectrum which promotes plants at various stages of growth,and its IR and UV LEDs form an invisible protective coating around your plants to ensure a completely sound growth. An ideal led grow lights full spectrum for all kinds of plants, help them go from sprouting, growing, blooming to fruit bearing.
  • 【Widely Used Plant Grow Light】MSMKEJI led grow lights for indoor plants can be used for both hydroponics and indoor plants in soil, such as orchid, potatoes, lettuce, chili, tomatoes, cucumbers, peppers, leafy greens, and herbs.aquarium plants like algae that in greenhouse, garden, vertical farm, grow tent or grow room.
  • 【Best Consumer Service】We have great faith in our Led grow lights for plants.A full refund within 30 days since the day of purchase for no reason. Each one of them comes with a 1-year technical support.You will be given a completely satisfying answer within 24 hours if you have any problem or doubt, and we are always be with you.
-$130.00 SALE OFFBestseller No. 3
VIVOSUN VS3000 LED Grow Light with Samsung LM301 Diodes & Daisy Chain Driver Dimmable Lights Sunlike Full Spectrum for Seedling Veg & Bloom 300W Plant Grow Lamps for 3x3/4x4 Grow Tent
  • High Efficiency & Lower Cost: This VS3000 LED grow light uses premium Samsung LM301 diodes with high-efficiency (2.9μmol/J); The energy consumption is only 300 watts; It can cover 4 x 4 ft. area (5 x 5 ft. max)
  • Dimmable Ballast: This LED plant lamp has a dimming knob with 4 levels that can be used from sprouting to flowering; ​Designed with the daisy chain function (EXT) that allows you to connect multiple lights with 1 socket
  • Full-spectrum Sunlike Lighting: These LEDs deliver optimal light-spectrum coverage (380nm-780nm, 660nm, 730nm, 3000K, 5000K), offering more power for your blooms and maximum PAR output at various distances
  • No Noise & Low Heat: This grow light equipped with high-quality heatsink and ventilation holes, so it can prevents burning or damage to your plants; With no fan design, it can provide a quiet working environment
  • Safe to Use: The IP65 rating surface can meet your demand in different indoor planting environments; Comes with grow glasses, a pair of VIVOSUN US-patented rope hangers & 5-year after-sales warranty service
Bestseller No. 4
BLOOM PLUS Latest XP3000 LED Grow Light with Samsung LM301B Diodes 4x4 ft Coverage Dimmable Full Spectrum 300W Grow Light for Indoor Plants Veg and Bloom Hydroponic Growing Lamps with 652pcs LEDs
  • TOP PERFORMANCE & HIGH EFFICACY: Bloom Plus upgraded XP3000 LED growing light use the latest high-efficiency (2.7 umol/J) LED plant light technology - Samsung LM301B Diodes for extremely high output, increase the yield of crops and save operation cost, generates more usable lighting per watt, and provides better light canopy penetration.
  • LESS ENERGY CONSUMPTION: Comparable to traditional 600W HPS/MH, XP3000 Plant Grow Lamp consumes only 300Watt with 652 pcs LEDs! Get 50% higher yield harvest and save costs. Perfect for core coverage 4x4 ft. Adjust the height and brightness properly to meet your plants desired level for optimal growth.
  • ADVANCED FULL SPECTURM & DIMMABLE KNOB: Delivering optimal light-spectrum coverage - 650-665nm Red Lights ,2800-3200K warm lights, 4800-5000K white lights ,730-740nm IR lights, best for all stages growing from seed to flower, increase yield & crop quality‎. XP3000 LED indoor growing lamp has a dimming knob that makes it adjustable to different growing periods for your plants; It can adapt to the growth needs of different plants in different periods.
  • SILENT OPERATION & SOLID CONSTRUCTION: Fanless LED grow design will make your growing life quiet. Large areas of solid aluminum heat sinks help you to achieve the ideal cooling system. Adopts high performance power supply driver to achieve high PAR output, longer lifespan to speed up plant's grow processes and boost yields while saving you on your energy bill.
  • 100% SATISFACTION GUARANTEED---The Bloom Plus LED Grow Lights offers a 30-day money-back guarantee and a trusted 3 years warranty. Professional U.S. local after-sales service provides you with the most convenient shopping experience. Make sure you purchase authentic Bloom Plus grow lights. If any questions, please feel free to contact us by email.
-$90.00 SALE OFFBestseller No. 5
Mars Hydro 2023 New TSL2000 300 Watt Led Grow Lights for Indoor Plants, Sunlike Full Spectrum Dimmable Daisy Chain Growing Lamps for Hydroponics Seedling Veg Bloom in 4x2/5x3 Grow Tent Greenhouses
  • 2023 Upgraded TSL2000 LED Grow Lights: Experience the advantages of our new diode layout, densely packed in the center and sparse on the sides. This arrangement creates a more uniform light distribution between the center and sides, ensuring the most even PPFD distribution and maximizing plant yield. These meticulous design details make the TSL 2000 300W grow light ideal for any stage of plant growth in 4x2ft for flower and 3x5ft for veg.
  • Wider Range & Stronger Light: The 120° angle white reflector design on Mars Hydro TSL2000 led grow light is patented, allows for wider coverage and increased light intensity, aiding plants in better light absorption. Boasting an actual power of 300W, the TSL2000 delivers robust performance, while other model 2000 from other brands only delivers 200 watts or less
  • Dimmable and Daisy Chain: With an independent dimming button on the external driver, this growing lamp allows you to adjust the brightness from 0 to 100% according to the specific growth stage of your plants. Additionally, it supports daisy chaining of up to 50 LED lights, seamlessly connected in a chain. The auto-sensing power supply is compatible with 120VAC, 240VAC, and 277VAC, making it suitable for both large-scale setups and personal settings.
  • Save Money and Energy: Mars Hydro's advanced SMD LED technology offers the highest PAR/LUMEN output while consuming only 300W with 704 LEDs, resulting in up to 50% energy savings compared to other grow lights for indoor plants, providing an additional 60% return compared to old HPS/MH lights.
  • Sunlike Full Spectrum LED: TSL2000 full spectrum growing light features 730-740nm Red IR/3200-4200Knm/5200-6800Knm spectra, providing the best light for all plant stages. Rapid plant response from seed to flower, and an increase in yield and crop quality‎. Over 90% light energy can be absorbed by plants.


5/5 - (3 votes)

Bowden draws from over a decade of home growing experience as well as consulting for small-scale and hobbyist-level growers. He has written hundreds of articles, thought pieces, and tutorials about growing cannabis at home

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