15 Best Grow Lights in 2021

Technologies of grow lights are changing and improving day by day, meanwhile so are the plants growing techniques and requirements, like cannabis, tomatoes growth indoor.

Today we’re talking about the 15 best Ceramic Metal Halide (CMH) Grow Lights in grow light industry.

CMH grow lights are hands down the best HID grow lamp technology available on the market right now.

Also known as CMH/LEC grow lights, they closely mimic the sun, provide the highest gram per watt, and even provide the coveted good UV wavelengths that fend off mold and mildew as well stimulate plant vigor and greater resin and terpene production.

If you want to understand deeply how ceramic metal halide grows lights, please read on. By the end of this article, you will know everything you need to know!

So do CMH Grow Light is Best for Your plants?  Please consider the followings points before buying.

1. Invest planting time

Usually working time of 20,000 hours of CMH grow lights. If you are planning for obsolescence and want the greatest yield ROI within the 1-2-year time frame, choose CMH. And even if you keep your grow space past 5 years, don’t worry, CMH’s provide a greater gram per watt due to their higher PPF and canopy penetration.

2. The size of your plant’s growth

Increased ceiling height allows for better heat management, better air-flow capability, and more even light coverage for fuller and taller flower strains.

Some brands grow lights put off very little heat and this is good or bad depending on the size of your grow space and the climate at your facility location. How insulated your space is during the winter months is crucial if you are operating in colder climates, which will increase costs.

If plants grow in warm places, you should consider the grow lights’ heat on the warm days. Like increased the height of grow lights, etc. to adjust the best situation of plant growth.

CMH fixtures put off more heat than LED’s, but less heat than their HPS counterparts. This heat can be utilized to achieve the ideal temperature for your growing methodology.

 3. Your allocated budget

Finally, all of us favorite factor to consider, BUDGET cost!

Let’s compare LED and CMH grow light real cost, you will know how to choose indeed.

The initial cost of an LED is 2 to 4 times the cost of a comparable CMH fixture. LED fixtures, especially the ones that include the UV spectrum, are very expensive in terms of up-front cost. When it comes to power consumption and the power bill, LED’s only saving the grower about 15% on the power bill compared to CMH fixtures. However, the LED grower will use less power for cooling, but that saving depends on other factors in the grow space. The additional cost a CMH grower will realize is replacing bulbs. You will be buying replacement CMH bulbs after 12-18 months of use. In addition, it is recommended that you change between the 4100K CMH bulbs in the vegetative phase to the 3100K CMH bulbs for flowering. Therefore, you will incur the cost of more bulbs utilizing CMH technology, but you will optimize your light cycles and extend the timeframe to replace bulbs.

In the end, a summary of choosing CMH grow lights:

1. You need to maximize ROI within 1-2 years

2. You need greater canopy penetration for the strains you are growing

3. Need the beneficial UV spectrum for maximum terpene resin production

4. Need to maximize your gram per watt and flower quality

5. Qualify for state rebates

The 15 best grow lights list in 2021

  1. Best CMH Grow Light Kit: Melontek 630W CMH grow light Kit

Melontek Lighting Ceramic Metal Halide dimmable grow lights is by far the best option on the market in 2021.

Growers can just plug the bulb in and start shining, which includes everything your plants need to light growth.

The bulb socket is at the end of the hood, so the bulb hangs horizontally. This makes for a more even light spread and more planting spaces than a vertical bulb.

The high-quality reflector is 98% reflective German aluminum with 95% reflective textured corners which is a very high thickness and reflectivity.

Melontek 630W CMH grow light’s Knob Step includes 315W/400W/500W/600W/630W available. Growers could choose the suitable watt and set the grow light’s shining time when the plants grow in different periods.

This ensures optimal output and uniformity, meaning you are losing as little light as possible from the reflection and there are no hot spots that can burn your plants. It gives you a coverage area of 4 by 4 feet.

This kit also includes a 630W CMH bulb, correlated color temperature 3100K of Light output(Lumens @ 100 Hours) is 78500, or 4200K of Light output(Lumens @ 100 Hours) is 65000. It is optional.

The 3100K bulb does fine with vegging. And it’s much better at flowering.

The 4200K bulb is better for vegging growth and fruiting, so some growers use it if they are getting a light for the whole grow cycle.

3100K bulb have Color Rendering Index (CRI) or (Ra): ≥90

4200K bulb have Color Rendering Index (CRI) or (Ra): ≥97.

This ample spectrum significantly increases the quality and yield of your crops. Basically, growers could accord their plant’s real situation to choose the right color temperature. In short, they will give you a huge output.

This kit runs much cooler than a comparable HPS or MH light.

Furthermore, these lamps last a long time, with an expected lifespan of 20,000 hours. More importantly, they retain 90% of their lumen output after 8000 hours of use and still retain 85% of their PPF output after 20,000 hours.

So of course this quality lighting is our recommendation for the best CMH grow light.

The ballast included in the reflector is a 50/60 Hz low frequency, square wave, electronic ballast, with a rated lifespan of 50,000 hours.

With 30% more lumens and a higher PAR/PPF output than a standard ballast, made by Melontek 315W CMH digital ballast actually uses far less energy too. Making it more economic to run and giving higher yields. Ultra-Safety: fast start-up facility and generates much less heat, protection against Short Circuit, Power Surge, Ignition Failure, Overheat, End-of Bulb-Life, Silent operation.

The whole CMH kit is covered by a 1-year warranty.

Advantage

The manufacture has fixed the whole Kit, easy to install and use, much more compact than others

Huge amount of light —

3100K bulb of Light output(Lumens @ 100 Hours) is 78500, 

4200K bulb of Light output(Lumens @ 100 Hours) is 65000.

Long lifespan — the high-quality bulb is rated for 20,000 hours and retains 85% of its PPF output in that time at least

Square wave ballast — no issues with RF interference and a much more steady stream of light

Low heat — this light does not need to be ventilated

Free ratchet hangers — a free set of ratchet hangers is included

Disadvantage

Since 2003, provide OEM/ODM service upon customer’s requests. The brand name of Melontek Light is not so famous as others, but some growers have used this high-quality grow light Kit on the market. Good reviews.

Get more info: www.amazon.co.uk/High-Reflectivity-Aluminum-Frequency-Electronic-Hydroponic/dp/B08BNF82S3

2. Grow Co CMH 315W System

Grow Co CMH 315W System

The Grow Co Ceramic Metal Halide Lighting System is not the cheapest one available.

Run cooler than conventional lighting setups and won’t require cooling with fans.

It is a low-frequency square wave ballast with a fully sealed ballast housing, so you don’t have to worry about RF interference.

The reflector is made from high-reflective hammer tone aluminum, but the manufacturer does not provide any info concerning the percentage of reflectivity and this is impossible to measure on your own without the proper equipment.

The Grow Co kit linked to here includes the ballast, reflector, bulb and a free set of ratchet hangers. In other words, the exact components as the other kit. However, Grow Co offers several other options as well.

Have it with a 240V cord instead of the standard 120V cord and they sell a 630-watt version, in which the reflector holds two lamps, doubling the effective light intensity.

Pros

No assembly required, just screw in the bulb and hang the light

630-watt option available — you can double the power with a dual-bulb reflector

2-year warranty 

Cons

Reflector effective didn’t list

It is bright and has UV! So wear protective glasses!

Get more info: www.amazon.com/Grow-Co-Ceramic-Spectrum-Standard/dp/B06XJG73B3

3. VIVOSUN 315W Ceramic Metal Halide CMH/CDM Grow Light Kit

They have quite a considerable market share now.

The product boasts a sturdy reflective hood made of high-quality Italian VEGA aluminum and rated at 98% reflectivity. Thanks to the unique texturing and contour design, it will eliminate dead zones and hot spots, delivering a uniform light to cover the entire surface of your indoor garden.

The quality CMH fixtures run cooler than conventional lighting setups and won’t require cooling with fans. In the long run, this will significantly drop your electricity costs and increase efficiency so you can enjoy bigger crops.

The unit delivers enough light to cover a 9-square-foot area during vegetative growth and an area of 6 square feet during the bloom phase. It provides a more efficient spectrum for growing than standard HPS systems.

Reinforced Metal Internal Gears Ratchets, Loose-proof Design.

The ballast is built into the reflector and uses Square-Wave technology.

PROS

Long lifespan of 20,000 hours on average

Italian VEGA Aluminium hoods provide a more even distribution of light

Comes with a 3-year warranty

CONS

More expensive than most other bulbs

Large price fluctuations

Get more info: www.amazon.com/VIVOSUN-High-Reflectivity-Full-Spectrum-Hydroponic-Suspension/dp/B07MYQNF2F

4. Sun System Grow Light-LEC 315 Light Emitting Metal Halide

It has an all-in-one reflector with vertically hanging bulbs. You get an all-in-one hood reflector, which means it contains the ballast needed to power the lamp. It comes with all of its parts ready for coupling and use.

Naturally, that means it’s a bit more expensive than most competing brands, but if you can afford it, it’s worth the extra cost.

The bulb socket is at the top of the hood, so the bulb hangs vertically. This makes for a more even light spread than a horizontal bulb.

The inside of the hood is 98% reflective German aluminum with 95% reflective textured corners.

Along with the quality hood, the kit also includes a Philips Master 315W CMH bulb.

The bulb has a coverage area of ​​4×4. This design ensures uniform lighting for your crops making it the perfect choice for the vegetative and flowering stages of your crops.

Pros

All-in-one construction — ballast is built into the hood, making this kit much more compact than others

Huge amount of light — given the 315w consumption, the bulb gives you a huge 33,000-lumen intensity

Long lifespan — The high-quality bulb is rated for 20,000 hours and retains 85% of its PPF output in that time

Square wave ballast — no issues with RF interference and a much more steady stream of light

Low heat — this light does not need to be ventilated

Free ratchet hangers — a free set of ratchet hangers is included

Cons

High price — higher price than competing lights

Possible overheating of crops at close range

Get more info: www.amazon.com/Sun-System-Grow-Lights-Hydroponic/dp/B00YT0QLBE

5. TopoGrow 315W CMH Grow Light Kit

This TopoGrow 315W CMH grow light is available in some different sizes optional and is optimized for the bloom phase with enhanced reds. Will produce the goods in both flower and vegetable. Besides,  CMH model boasts of high photo delivery that makes it almost similar to natural sunlight.

It is better than hid systems when it comes to light discharge. Being able to operate more efficiently at higher temperatures means a boost in performance, Coverage area is 4FTX4FT, which means a bigger harvest and less cost.

A sturdy reflective hood is made of high-reflective aluminum rated at 98% reflectivity; the contour design and texturing eliminate hot spots and dead zones.

Degradation time: Standard MH bulbs have a lifetime of around 10,000 hours. Which is less than 50% of the 24,000 Hours that CMH is rated for

When delivered, a TopoGrow light comes with a reflector, a power cord, a 315W ballast, CMH lamps, a heavy-duty 1/8 inches rope hanger

Pros

Benefiting from the latest CMH technology, this product is designed to last longer than other HID grow lights, counting for up to 24,000 hours of light, enough to assist your plants throughout their life cycles.

The balanced light spectrum is suitable for all growth stages and will deliver the UV supplementation necessary for your flowers and veggies to stay strong and healthy.

One light bulb is powerful enough to cover a 4×4 feet area which means a decrease in your monthly electricity bills and a boost in performance or bigger crops.

The product is made of high-quality aluminum that is lightweight and sturdy at the same time, eliminating all dead zones and hot spots for uniform lighting.

Cons

There is no power switch coming with this light which means you’ll either have to connect one yourself or get used to plugging in and unplugging the light every time you want to use it.

Shorter lifespan compared to other grow lights, It comes with no warranty

Get more info: www.amazon.com/TopoGrow-Horizontal-120V-240V-Enclosed-Reflector/dp/B075KJ1W4G

6. Hydro Crunch CMH 315 Watt Ceramic Metal Halide Plant Growth Light

Comes complete with ballast, reflector and adjustable light ratchet hanger

Product dimensions: 20 in. x 9.5 in. x 8 in.

The ballast features 2-year limited warranty

Digital ballast is ETL listed and CE certified

Comes with hooks for easy hanging installation of your grow light

120-Volt 14.5 ft. power cord and 7 ft. daisy chain cord included

Dual input voltage: 120-Volt/240-Volt

Reflector type: enclosed style

Includes daisy chainable feature (120-Volt MAX 4 units, 240-Volt MAX 8 units)

Compared with HPS, it emits less heat. The 3×3 coverage area allows you to get a better harvest at a relatively low cost.

On delivery, users will find  ballast, reflector and adjustable light ratchet hanger

Advantage

Good light works well fast shipping bright light

It has a two-year warranty and only applies to ballasts

Slightly lower price and higher energy efficiency

Disadvantage

The ballast is much larger than other CMH fixture

The reflector is easy to deform and bend

Unstable operation of some products

Get more info: www.amazon.com/Hydro-Crunch-CMH02-315-ROPE-315-Watt-Enclosed/dp/B07C754WCT

7. TopoLite Ceramic Metal Halide CMH 315W Grow Light Kit

A higher temperature creating light much closer to the suns. Being able to operate more efficiently at higher temperatures means a boost in performance.

The bulb provides the full light spectrum, so it can be used for both veg and bloom stages.

Coverage area is 4ft*4ft, which means bigger harvest and less cost

Lumen: 120v/240v: 33000 lumen and ETL Listed replace 1000w HPS lamp kit

Degradation time: Standard MH bulbs have a lifetime of around 10,000 hours. Which is less than 50% of the 24,000 Hours that CMH is rated for

Highly efficient – puts out 1.9 micromoles per watt of electricity

Extremely high PAR levels

Warranty provided by the company. Don’t list Warranty time.

Reflectivity doesn’t list.

Pros:

20,000-hour lifespan.

Cons:

Bulbs do not have a great life,

HPS is better than it.

Bulbs broke easily.

Get more info: www.amazon.com/TopoLite-Enclosed-Reflector-Fixture-Hydroponic/dp/B074L25C2R

8. BloomGrow Hydroponic CMH 630W Grow Light Fixture

It is optional 630W CMH Enclosed Kit and Open Kit.

German aluminum reflector

Ideal as both supplementary and standalone lighting

Highly efficient – puts out 1.9 micromoles per watt of electricity

Extremely high PAR levels

A blinding intensity that’s clearly visible with the naked eye

Hydroponic CMH 630W 120/240V Grow Light Fixture 120V Plug w/3100K Full Light Spectrum CMH Bulb Replace LED Digital Ballast for Plant Growing (630W CMH Open Kit 3100K)

CMH bulb provides the full light spectrum, so it can be used for both veg and bloom stages.

Able to operate more efficiently.

120v/240v: 33000 lumens and ETL Listed replace 1000w HPS lamp kit.

Standard MH bulbs have a lifetime of around 10,000 hours. Which is less than 50% of the 24,000 Hours that CMH is rated for.

The coverage area is 4ft*4ft, which means bigger harvest and less cost.

Pros

The balanced light spectrum is suitable for all growth stages

Cover a 4×4 feet area which means a decrease in your monthly electricity bills and a boost in performance or bigger crops.

Nice light

Cons

Ballast does not last

Get more info: www.amazon.com/BloomGrow-Hydroponic-Fixture-Spectrum-Replace/dp/B078TB6699

9. Oppolite 315W CMH CDM Grow Light Kit

It is an all-in-one hood reflector. Mini Digital Ballast(inside the reflector). The bulb socket is at the top of the hood, so the bulb hangs vertically. This makes for a more even light spread than a horizontal bulb.

It means it contains the ballast needed to power the lamp.

Naturally, that means it’s a bit more expensive than most competing brands, but if you can afford it.

The bulb socket is at the top of the reflector, so the bulb hangs vertically. A blinding intensity that’s clearly visible with the naked eye

Vertical Reflector: Overall size: 24L * 20W * 9.50 H inch

87% reflective EU aluminum

Highly efficient – puts out 1.9 micromole per watt of electricity

315W Mini Digital Ballast(inside the reflector): Case size: 7.6” (L) 5.10” (W) 2.63”(H), Input: 120~240V/ 50~60Hz

High Power Factor of 95.0%

THD<15%

Crest Factor<1.7

Bulb 3100k color temperature, High 92cri, 33,000 initial lumens (105Lm/W) , Expected Life Span (hr): 20,000

The CMH fixture can be used as a primary veg light; a primary light for SOG applications; or a supplemental full spectrum light for large flowering operations.

Pros

All-in-one construction — ballast is built into the hood, making this kit much more compact than others

Huge amount of light — given the 315w consumption, the bulb gives a huge lumen

Mini ballast — 50~60Hz

Free ratchet hangers — a free set of ratchet hangers is included

Cons

High price — higher price than competing lights

Need to consider more heat dissipation

Get more info: www.amazon.com/Oppolite-Vertiacl-Reflector-Replace-Vertical/dp/B071NS7BYH

10. Grower’s Choice Horticulture Lighting with Full Spectrum 315W Ceramic Metal Halide light

1 complete lighting fixture and 1 cmh 315 single-ended lamps. Dimmable Option allows lamps.

Have Smart Start Ignition Control & Soft Start Technology and has lots of advantages to help growers to increase yield. This Indoor garden grow kit also has Automatic Frequency Adjustment, Full Circuit Protection, and RF Shielding! Compare to the General hydroponics system, this grow light Uses Advanced Square Wave Low-Frequency Technology for ultimate efficiency.

The Growers Choice Horticultural Lighting 315W SE CMH Complete Fixture delivers the highest efficiency and closest spectrum to actual sunlight in the commercial horticultural industry. The wide spectrum of light, including ultraviolet and infrared light, provided by the Growers Choice Horticultural Lighting 315w SE CMH Complete Fixture is perfect for promoting vegetative growth to increase the health and vigor of your plants and ensure a rich harvest.

Pros

Grower’s Choice fixture provides the full spectrum of lighting. It’s the Grow lights for seed starting, veg, flowering. It is a commercial grow light, customer can use it for a greenhouse, but also can use in a grow tent.

All Grower’s Choice fixtures have RJ9/RJ14 ports on them so that they can be controlled via the Gavita EL1 and/or EL2 controller. Grower’s Choice 315W-CMH includes a 3 Year Manufactures USA warranty.

Cons

Did not have the ballast, coverage area, reflector information

High price than other competitive grow lights

Get more info: www.amazon.com/Growers-Horticultural-Lighting-CERAMIC-FIXTURE/dp/B06VSF6G4J

11. Melontek 315W CMH Grow Light Fixture

315w CMH (3000K) bulb: 1.95 PPF per second high light source, extremely high PAR levels, 3100k color temperature, High 92cri, 33,000 Initial Lumens (105Lm / W) High 90% Lumen Maintenance @ 8,000hrs / High 85% Expected Life (hrs): 24,000, Full spectrum. The 3K lamps are perfect for flowering/ fruiting as standalone lights.

German aluminum foil, specular reflection design, reflectivity up to 98%, provides good indoor growth light.

The coverage area is 4FTX4FT, which means higher harvest and lower cost

Degradation Time – Standard MH bulbs have a lifespan of around 10,000 hours, which is less than 50% of the 24,000 hours for which CMH is rated.

Offers a light spectrum much closer to natural sunlight than typical high-intensity discharge (HID) systems.

This Melontek Lighting 315W Ceramic Metal Halide grow light Kit is the best hydroponics supplied you should choose for your plant.

Ballast has Automatic Frequency Adjustment, Full Circuit Protection and RF Shielding which is low-frequency square wave ballast use for CMH grow lights, hydroponics/greenhouse/indoor grow plants. Ultra-Safety: Protection against Short Circuit, Power Surge, Ignition Failure, Overheat, End-of Bulb-Life. Silent operation-Silent running and cool operating temperature.

Ballast and bulb can be used with any type of 315W Euro reflector. White metal shell, higher insulation protection and lighter weight.

Compare to the General hydroponics system, this grow light Uses Advanced Square Wave Low-Frequency Technology for ultimate efficiency. Ensure unbeatable grow house results.

Pros

Melontek CMH Lamp is special for plant ( tomatoes, cannabis, roses, tulips ) growth in the large commercial greenhouses, hydroponic industries, horticultural lighting. Melontek Manufacture still offers personal customized indoor lighting layouts and comparison studies for many types of commercial applications.

The price is reasonable.

Cons

If commercial growers want to get more profit, need to contact the manufacture to discuss further

Get more info: www.amazon.co.uk/Fixture-120V-240V-frequency-electronic-Hydroponic/dp/B08BHR1YD6

12. Nanolux NN640028030 CMH 315W Fixture

Great for hobby and commercial growers

CMH lamps have a very broad light spectrum which is more similar to the sun itself than any other form of HID lamp.

Nanolux has taken CMH technology and increased its operational efficiency, making the most comprehensive spectrum of light output for an HID fixture even better. The CMH lamps also have increased efficiency in PAR/Watt compared to other forms of HID lighting. The CMH fixture can be used as a primary veg light or a supplemental full spectrum light.

•Fully sealed ballast is top-mounted

•CMH 315 Single Lamp Fixture vertical mounting position provides an even-light footprint

•97% GERMAN REFLECTIVE MATERIAL

•Both Nanolux CMH fixtures can be used with any 315W 3K or 4K horticultural CMH lamps from all leading quality

Power Factor: greater than equal to 0.99 / THD: greater than equal to 10%

CF: less than 1.7 Input / Frequency: 50-60Hz

Voltage: 120/240V

No Lamp Included

Pros

The ballast is top installed, so everything hangs above your plants. This could be a bit scary, so make sure you have a good grow tent that’s capable of holding up all that weight.

Cons

Lamp sold separately.

Get more info: www.amazon.com/Nanolux-NN640028030-CMH-315W-Fixture/dp/B0178GTPH2

13. Philips Master 3100K GreenPower CMH Light Bulb

Incredibly high 1.95 PPF (photosynthetic photon flux) per watt per second light source

3100k Color Temperature, High 92 CRI, 33,000 Initial Lumens (105Lm/W). Run-Up Time 90% (Max) – 1.5 min

High 90% lumen maintenance at 8,000 hr / High 85% PPF maintenance at 20,000 hr

Provides a compact and efficient metal halide solution for the horticulture market

The bulb must be used in a low-frequency ballast.

The existing ANSI C182 LCD for the 315W lamp requires that lamps must be operated on a low-frequency square-wave (LFSW) ballast and the starting current limits are minimum 4.1 amps (RMS) and maximum of 5.3 amps (RMS).

Design feature and benefit:

Philips Elite Agro 315W T12 Lamp provides a compact and efficient metal halide solution for the horticulture market. This lamp provides outstanding growth light performance over the life of the product. The painted tip lamp works great with GreenBeams reflectors.

It is a Philips Master 3100k CMH light.  Gives you unbelievably high PPF and 3100k shading temperature, which is essential for plants. It uses 315 Watts just, and the voltage of the light is 98V. The open evaluated light structure decreases splendid warmth from the roundabout fragment pipe. The light is perfect for open mechanical assembly livelihoods.

It’s a perfect response for any cultivator since it has the most bewildering PAR limits than some other CMH handle. It’s extraordinarily enhanced than some other create handle. It’s certainly one of the best Ceramic Metal Halide (CMH) Grow Lights.

Pros:

Great PAR output.

It fully supports the bloom stage.

Power saving.

Well-built and long run.

Cons:

You don’t get a free adapter with it.

No warranty.

Get more info: www.amazon.com/Philips-Master-3100K-GreenPower-Elite/dp/B00HXOJ1FG

14. Protopia CMH315W 4K CMH Grow Bulb

RICHEST SPECTRUM ON THE MARKET with a CRI of 98, makes this lamp the closest solution to the sunlight available

PROMOTES EXTREMELY TIGHT INTERNODAL SPACING, leading to more flowering sites and a full canopy

OFFERS SIGNIFICANT IMPROVEMENT in spectral quality and produce more PAR per watt than standard MH lamp

Color Temp: 4000K, Luminous Flux (LM): 33000 , CRI: 98, Initial PAR: 540μmol/s, Base: PGZ18

LONG LIFETIME: 15000hours lifespan with 1-year warranty

Features

For use in any standard 315W CMH fixtures

Produces more PAR per watt than Metal Halide lamps

Promotes extremely tight internodal spacing, leading to more flowering sites and a fuller canopy

Offers significant improvement in spectral quality over standard Metal Halide

Long usable life with high lumen output and high power efficiency

LOW-FREQUENCY BALLAST is highly recommended.

Protopia CMH 315W lamps are suitable for use in all standard 315w CMH fixtures. LOW-FREQUENCY BALLAST is highly recommended.

Protopia CMH 315W lamps use a proprietary phosphor coating on the outside of the arc tube to provide you with the richest spectrum on the market. For these ideal conditions, the light is a perfect plan. It offers a better than average number of PAR, which is room.

However there are certain complaints against it because of low durability, but the durability very much depends upon your way of usage. Different growers will depend on themselves’s opinions.

Pros:

The lifespan of 15,000+ hours.

Decent spectrum abilities.

Great canopy penetration.

Decent PAR output.

12 months warranty time.

Cons:

A bit lee brighter than other brands. Need to protect glasses

Get more info: www.amazon.com/CMH-Grow-Light-Bulb-Lights/dp/B06ZYQLHP9

15. Melontek 315W 3000K CMH Grow Light Bulb

Light output(Lumens @ 100 Hours) 37000

Lumens per Watt (lm/w) 120

Rated life (Hours @ 10 Hour / start) 15000

Correlated Color Temperature (K) 3100

Color Rendering Index (CRI) or (Ra) ≥90

Photon flux(µmol/s) 570

Burning Position U

Physical Data /Requirements

Max.Base Temperature (℃) 250

Max.Bulb Temperature (℃) 350

Luminaire Type Open/Enclosed

Lamp Electrical Date/Requirements:

ANSI Standard Ballast C182/0 or Electronic

Lamp Wattage (W) 315W

Lamp Operating Voltage(V) 100V

Lamp Operating Current(Amps) 3.15A

Min. Open Circuit Voltage (RMS) 198V

Min.Pulse Width @ 2700V(Microseconds) 1.9

Min.Plulse Rate per 1/2Cycle –

Pulse position (Electrical Degrees) –

Notice:The specifications contain data about typical performance on 50/60Hz sine wave ballast at nominal power

More Energy Saving

High Luminous Efficiency Ceramic discharge metal-halide (CDM) bulb, often referred to as Ceramic Metal Halide lamp (CMH) or Light Emitting Ceramic (LEC).

This relatively new light source, being compact, efficient, and powerful, is part of the high-intensity discharge (HID) lighting category, which offers the highest efficacy and longest life of any lighting type, and saves up to 90% of lighting energy.

Pros:

Provide more available energy than the standard Metal Hailde bulb/lamp. Deliver an optimized spectrum and high level of photosynthetic.

Active Radiation to promote healthy plant growth Specifically designed for Low-Frequency electronic ballasts.

The absence of frame wire eliminates any shadows in the beam. The Jacket is made from Quartz glass for horizontal.

Cons:

Need to contact with Melontek manufacture sales service to get more info and place orders or buy CMH grow light Kit together.

Get more info: www.amazon.co.uk/Fixture-120V-240V-frequency-electronic-Hydroponic/dp/B08BHR1YD6

Conclusion

We have tackled educating you on how these CMH grow lights work and which are the best CMH grow lights. We are sure you have learned a lot about them. One of the major benefits of the CMH grow light is its balanced spectrum, which is fitting for commercial planting, most indoor growers, indoor vegetable gardeners, or other plant enthusiasts who have a grow room. Finally, we hope that after completing this article, you will be able to make a better grower.


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