5 Best Metal Halide Bulbs
5 Best Metal Halide Bulbs
5 (100%) 1 vote[s]
iPower 4-Pack 600 Watt
Brand IPower
Light Type Metal Halide
6000 Kelvin
600W Grow Light Bulb
Brand IPower
13 x 3 x 3 inches
6000 Kelvin
Metal Halide HQI
Phoenix Electric Company
5.5 x 1 x 0.75 inches
Item Weight 0.1 Pounds
GE Halide Light Bulb
Brand: GE Current
175-Watt Light Bulb
Watt Ceramic Metal
Brand: Led
UV Advanced
Item Weight 4.8 ounces

Choose the Best Metal Halide Bulb

Customer’s Choice: the Best Rated Metal Halide Bulbs

12 users answered this survey. Please help us improve this review!

8.33% of users selected iPower 4-Pack 600 Watt, 33.33% selected 600W Grow Light Bulb, 50% selected Metal Halide HQI, 0% selected GE Halide Light Bulb and 8.33% selected Watt Ceramic Metal. Every month we analyze your answers and change our rating.

If you’re looking for the best metal halide bulbs, you’ve come to the right place. In this article, we will answer some of the most common questions about metal halide bulbs. We’ll also provide reviews of some of the top products on the market. By the end of this guide, you’ll know everything you need to choose the perfect metal halide bulb for your needs!

iPower GLBULBM600X4 MH Bulb – Extra-Low Lumen Depreciation!

If you’re looking for a high-powered metal halide bulb that can help facilitate rapid plant growth, the iPower GLBULBM600X4 is an excellent option. This bulb emits a blue and violet spectrum of light with high PAR, making it ideal for plants in their growth phase. Additionally, it has a long lifespan of 12, 000 hours, meaning you won’t have to replace it as often as other bulbs.

And even after 5, 000 hours of use, this bulb still maintains over 90% of its original lumen output. [1] So if you’re looking for a metal halide bulb that can provide long-lasting, powerful light, the iPower GLBULBM600X4 is a great choice.
  • Good for indoor/outdoor use
  • Long bulb life
  • Good light quality
  • One year warranty

  • Not as efficient as some other bulbs
  • May cause burns

Overall, the iPower GLBULBM600X42 is a great option for those looking for a powerful metal halide bulb. It emits a blue and violet light spectrum, which is ideal for plant growth, and has a long lifespan. So if you’re looking for a metal halide bulb that can provide long-lasting, powerful light, the iPower GLBULBM600X42 is a great choice.

iPower GLBULBM600 MH Bulb -Best Choice For Big Blooms And Radiant Flowers!

The iPower GLBULBM600 MH Lamp is perfect for anyone who wants the best in terms of light output and PAR value. With 60,000 lumens of output, this 600 watt lamp is one of the most powerful on the market, and its enhanced blue and violet spectral output makes it ideal for promoting healthy plant growth.

This bulb also has an exceptional lifespan of 12,000 hours, meaning that you won’t have to replace it nearly as often as other bulbs. [2]

  • Good light quality
  • Good for indoor/outdoor use
  • Low energy consumption
  • More pure white light

  • Short lifespan

So if you’re looking for a powerful and efficient metal halide bulb, the iPower GLBULBM600 is a great option.

Phoenix Electric Company HQI 150-14 MH Bulb – Best Combo Of Color And PAR!

The Phoenix Electric Company HQI150-14 MH Lamp is the best possible choice for anyone in need of a high quality, powerful light source. With a wattage of 150 watts and a color temperature of 14,000K, this lamp provides an incredibly crisp and white light with just the right amount of blue tint.

It is also made in Japan, ensuring that it lives up to the high standards of workmanship and quality that Japanese products are known for. [3] In addition, the combination of color and PAR in this lamp is simply unbeatable, making it the perfect choice for all your lighting needs.

  • Exceptionally high quality
  • Powerful light output
  • Perfect color temperature

  • Price

However, the high price tag is well worth it for the quality of light this lamp provides. If you are in need of a top-of-the-line metal halide bulb, the Phoenix Electric Company HQI150-14 MH Lamp is the way to go.

GE Lighting 47760 MVR175/U MH Bulb- Better efficiency – Lower Operating Cost!

Lamp life is an important but often overlooked factor when choosing light bulbs. The GE Lighting 47760 MVR175/U MH Lamp has a rated life of 24000+ hours, making it one of the longest lasting bulbs on the market.

This Metal Halide Light Bulb also has a color rendering index of 22, meaning that it renders colors very accurately. And with a 2100K color temperature, it creates a warm, inviting light. [4]

  • Long life
  • High efficiency
  • Good light quality

  • Better use with grow room glasses

If you’re looking for a long lasting, high quality metal halide bulb, the GE Lighting 47760 MVR175/U MH Lamp is a great option.

LED2020 315 Watt Ceramic MH Lamp – Full Spectrum Light!

Looking for a top quality grow light bulb? Look no further than the LED2020 315 Watt Ceramic MH Lamp. This lamp provides light in the HPS and Metal Halide range, making it perfect for a variety of needs. With a life-span of 20,000 hours, you can be sure that this bulb will last you a long time. [5]

Plus, the special feature of this lamp is that it is designed to help your plants grow healthy and strong. So if you’re looking for a grow light that will give you great results, the LED2020 315 Watt Ceramic MH Lamp is the perfect choice.

  • Long life-span
  • High efficiency
  • Good light quality

  • Not recommend dimming the lamp lower or higher than 315w

If you’re looking for a top quality grow light, the LED2020 315 Watt Ceramic MH Lamp is the perfect choice. With a long life-span and great results for plant growth, this lamp is sure to give you everything you need.

The Buyer’s Guide

Grow Bulbs vs. Grow Lights

The next thing you need to understand is the difference between grow bulbs and grow lights. Grow bulbs, like metal halides, produce light by running an electrical current through a gas-filled chamber. This process is called “arc discharge.”

Grow lights are fixtures that hold one or more grow bulbs. The most common type of grow light is the fluorescent tube fixture, which holds two or four T12 or T16 tubes. HPS (high pressure sodium) and MH (metal halide) bulbs are also available in fixtures designed for their specific needs, which we’ll discuss later.

So, when people talk about “bulbs,” they could be referring either to the actual light-emitting part of the system (the grow bulb) or to the entire fixture (grow light). Just to make things more confusing, some people use the terms “lamp” and “bulb” interchangeably. So when you’re out shopping, pay close attention to whether the product description is referring to a grow bulb or a complete grow light fixture.

Now that we’ve got that cleared up, let’s talk about how metal halide bulbs work.

How MH Bulbs Work

Metal halide bulbs produce light by running an electrical current through a gas-filled chamber. This process is called “arc discharge.” [8]

Inside the metal halide bulb, there is a small metal halide compound. When the electrical current passes through this compound, it produces a light spectrum that is similar to sunlight.

Metal halide bulbs are available in a range of wattages, from 150 watts all the way up to 1000 watts. The most common wattages are 400 watts and 600 watts.

Metal halide bulbs have a rated life of around 12,000 hours. This means that if you use your bulb for an average of 12 hours per day, it will last for about one year before it needs to be replaced.

Metal halide bulbs produce a lot of heat, so they must be used with a compatible ballast. A ballast is an electrical device that regulates the current running through the bulb. Without a ballast, the electrical current would be too high and would damage the bulb.

Ballasts are available in two different types: magnetic and electronic. Magnetic ballasts are older technology and are not as efficient as electronic ballasts. They are also more difficult to find because most manufacturers have switched to producing only electronic ballasts.

If you’re shopping for metal halide bulbs, make sure you get an electronic ballast. It will be more expensive than a magnetic ballast, but it’s worth the extra cost.

One last thing to keep in mind is that metal halide bulbs need to be “burned in” before they can be used at full power. This means that you need to use the bulb at a lower wattage for the first few hours of its life.

Most manufacturers recommend burning in your bulb at half of its rated wattage for the first 20 hours.
So, if you have a 400-watt bulb, you would burn it in at 200 watts for the first 20 hours.

After the initial burn-in period, you can start using the bulb at its full wattage.

What Are The Types Of Indoor Grow Lights ?

There are three types of grow lights for indoor plants: CFLs (compact fluorescent bulbs), LEDs (light emitting diodes) and high pressure sodium (HPS).

What Are The Types Of Indoor Grow Lights ?

CFLs emit a lot of light in the blue spectrum, which is great for vegetative growth. They don’t produce as much heat as HIDs, so they can be placed closer to your plants. They’re also cheaper than LEDs. However, they’re not as efficient and don’t last as long.

LEDs emit very little heat, so they can be placed close to your plants without worrying about burning them. They’re also more efficient than CFLs, meaning they use less electricity to produce the same amount of light. However, LEDs are more expensive than CFLs.

High pressure sodium bulbs are the most common type of HID bulb.
They produce a lot of light in the red and orange spectrum, which is great for flowering and fruiting plants. HPS bulbs produce a lot of heat, so they must be placed further away from your plants than CFLs or LEDs. [6]

If you’re looking to produce the biggest, most bountiful plants possible, high pressure sodium bulbs are a great option. They are also very inexpensive, making them a popular choice for budget-conscious growers.

Keep in mind that HPS bulbs must be used with a ballast rated for high pressure sodium bulbs. Using the wrong kind of ballast can damage your bulb and shorten its lifespan.

There are pros and cons of three types of grow lights for indoor plants:



  • Inexpensive
  • Low heat output
  • Can be placed close to plants


  • Less powerful than HPS and LED lights
  • Not as efficient as LED lights



  • Very powerful light output
  • Great for flowering and fruiting plants


  • Produces a lot of heat so must be placed further away from plants than CFLs or LEDs



  • Very energy efficient
  • Long lifespan


  • More expensive than HPS and CFL bulbs
  • Not as powerful as HPS bulbs (but this is changing rapidly)

If you’re looking for an energy-efficient option that will still give your plants the light they need to thrive, LED grow lights are a great choice. LEDs are also becoming more powerful all the time, so they may be a better option for you if HPS bulbs are too strong for your needs.

What Color Light is Best?

Plants need light of different colors for different purposes. Blue and red light are the most important for plant growth, but orange, yellow, far-red, and green light also play a role. Ultraviolet (UV) light is mostly harmful to plants, but a small amount is necessary for some processes.

What Color Light is Best?

Here’s a quick rundown of how each color affects plants:

  • Blue light is necessary for healthy leaf growth. It helps with chlorophyll production and prevents stem elongation.
  • Red light promotes flowering and fruiting in most plants. It also helps with photosynthesis.
  • Far-red light promotes seed germination and root growth.
  • Green light doesn’t have a lot of effect on plant growth, but too much of it can result in stunted growth.
  • Orange light helps with stem and root growth, as well as preventing premature fruit drop.
  • Yellow light promotes flowering and fruiting.
  • UV light helps with plant development, but too much of it can damage leaves. [7]

As you can see, different colors of light have different effects on plants. Most plants need a mix of all these colors for optimal growth.

How To Place and Use the Light?

You need to be careful when handling metal halide bulbs since they contain mercury. The best way to place the light is by using a socket with a porcelain finish. You can then use either an HID ballast or LED driver to power the bulb.

Here are some tips on how to use your metal halide bulbs:

  • Start by turning off the power to the area you’ll be working in. This is important because you don’t want to risk getting electrocuted.
  • Next, remove the old bulb from the socket carefully. Again, be careful not to break the glass and release any mercury inside.
  • Now, take your new bulb and insert it into the socket. Make sure that it’s inserted all the way and that the connections are secure.
  • Finally, turn the power back on and enjoy your new light!

Keep in mind that metal halide bulbs do produce a lot of heat, so be sure to place them in a well-ventilated area. Also, make sure to follow the manufacturer’s instructions carefully to avoid any accidents.

Factors To Consider When Choosing Metal Halide Bulbs

There are a few factors you should consider when choosing metal halide bulbs:

  • The wattage of the bulb: Metal halide bulbs come in a range of wattages from 100W to 1000W. Choose the wattage that best suits your needs.
  • The Kelvin rating: This measures the color temperature of the light emitted by the bulb. A higher Kelvin rating means a cooler, more blue light, while a lower Kelvin rating means a warmer, more yellow light.
  • The CRI: This stands for Color Rendering Index and it measures how well the light renders colors. A higher CRI means better color rendering.
  • The Lumens output: This measures the amount of light output by the bulb. The higher the lumens, the brighter the light.

Common Grow Light Accessories

You may need a few extra accessories to go along with your new grow light. These common grow light accessories will help you get the most out of your investment and provide everything you need for a successful growth.

First on the list is a good quality timer. A timer will ensure your plants get the right amount of light each day, and it can also help regulate other factors like temperature and humidity. You can find timers at most hardware stores or online.

Next, you’ll need some sort of reflector to maximize the light output from your bulb. A reflector can be as simple as a piece of aluminum foil placed around the bulb, or you can buy commercial reflectors designed specifically for grow lights.

Finally, you may want to invest in a grow light stand or hanger. This will allow you to position the light at the perfect height for your plants. Stands and hangers are available at most garden stores or online.

With these accessories, you’ll be well on your way to growing healthy plants under metal halide bulbs.

What you need to know about grow light kits

A grow light kit is simply a set of components that you need to get started with growing plants indoors. It typically includes the grow light itself, as well as a reflector and timer.

What you need to know about grow light kits

Kits are a great way to get everything you need in one purchase, and they can often be found at a discount when compared to buying the items separately. However, it’s important to make sure that the kit you choose has everything you need for your specific setup.

Mistakes To Avoid Once You Buy Your Grow Light

When you are ready to purchase your grow light, it is important to avoid making these common mistakes:

  • Not checking the warranty. Make sure to check what the warranty covers and for how long. This will ensure that you are covered in case something goes wrong with your purchase. Buying from an unknown or untrustworthy source. There are a lot of scams out there, so be sure to do your research before making a purchase. Only buy from a trusted source.
  • Not getting the right bulb for your needs. Be sure to get a bulb that is specifically designed for metal halide bulbs. Otherwise, you may not be getting the full benefit of the product.
  • Not following the instructions.
    Be sure to read the instructions that come with your product. Failure to do so could result in damage to your bulbs or even injury.

By following these simple tips, you can be sure that you will be happy with your purchase and avoid any common mistakes.

Other Helpful Notes and Tips

  • You can find metal halide bulbs in different shapes and sizes. The most common ones are PAR or BR.
  • When it comes to wattage, metal halide bulbs range from 30 watts to 1000 watts.
  • The lifespan of a metal halide bulb is between 6000 and 15000 hours.
  • The lumen output of a metal halide bulb ranges from 3000 to 120000 lumens.
  • Metal halide bulbs produce a lot of heat, so be sure to use them with caution.
  • Metal halide bulbs are available in different color temperatures, from cool white to daylight.
  • Be sure to recycle your old metal halide bulbs properly. They contain mercury and other harmful chemicals.

Other Helpful Notes and Tips

Most people choose metal halide bulbs for their brightness and energy efficiency.

If you’re looking for a light bulb that will provide you with quality lighting, then a metal halide bulb is the way to go.
Be sure to follow the tips and advice in this guide so that you can find the best metal halide bulb for your needs.


How Long Should Grow Lights Be On?

The answer to this question depends on what stage of growth your plants are in. For seedlings and young plants, you’ll want to keep your grow lights on for 14-16 hours per day. Once your plants have reached the vegetative stage, you can reduce the amount of time they’re under the lights to 12 hours per day. During the flowering stage, you should only have your grow lights on for about eight hours each day.

Of course, these are just general guidelines. Your specific grow light schedule will also depend on factors like the type of plants you’re growing, the temperature of your grow room, and the intensity of your grow lights.

If you’re not sure how long to keep your grow lights on, it’s always best to err on the side of too much light rather than too little. Plants are very resilient and can usually handle being under the lights for longer than you might think.

Can any light be used as a grow light?

No, not all lights can be used as grow lights. The light must be within a certain wavelength range in order to provide the right type of light for photosynthesis. Metal halide bulbs emit light within this ideal range, making them great for use as grow lights.

Do metal halide bulbs have any drawbacks?

Like all light bulbs, metal halide bulbs will eventually burn out and need to be replaced. They also require a bit more care than other types of grow lights, such as LED grow lights. Metal halide bulbs must be handled with care, as they can break easily.

Additionally, metal halide bulbs produce a lot of heat, so they must be used with caution around flammable materials. Be sure to follow the manufacturer’s safety instructions when using these types of bulbs.

What type of light is best for growing plants indoors?

The best type of light for growing plants indoors is metal halide. Metal halide bulbs emit a strong, white light that is ideal for plant growth. These bulbs are available in a variety of wattages and sizes, so you can choose the right one for your needs.

Metal halide bulbs are also very efficient, so they will not raise your energy bills too much. If you are looking for an affordable way to grow plants indoors, metal halide bulbs are a great option.

One downside of metal halide bulbs is that they produce a lot of heat. This can be a problem if you do not have proper ventilation in your grow room. Make sure to provide adequate ventilation when using these bulbs to avoid any problems

How often must I replace HID lighting like HPS and MH bulbs?

HID bulbs, like MH and HPS bulbs, should be replaced every 12 months or so. This will ensure that your plants are getting the best possible light for growth. When shopping for HID bulbs, it’s important to look for ones that are specifically designed for plant growth. This will ensure that you’re getting a quality product that will provide your plants with the light they need to thrive.

How close can fluorescent bulbs come to my plants?

The average fluorescent light bulb emits about 100 lumens per watt, whereas the average metal halide bulb emits around 75 lumens per watt. However, metal halide bulbs have a much higher color rendering index (CRI) than fluorescent bulbs. This means that they are able to better simulate sunlight, which is beneficial for plant growth.

As a general rule of thumb, you should keep metal halide bulbs at least 18 inches away from your plants. However, it is always best to consult the manufacturer’s instructions before making any final decisions.

How many hours of growing light do plants need?

Most plants need around 12-16 hours of light each day to grow properly. This can be provided by a combination of natural sunlight and artificial light, such as from metal halide bulbs.

During the vegetative stage of growth, it is generally recommended to give plants 18-24 hours of light per day. This will promote faster growth rates and larger yields. However, during the flowering stage, it is best to reduce the amount of light to 12-14 hours per day. This will help the plants focus their energy on producing flowers and fruits instead of leaves.

If you are using metal halide bulbs to provide all of the light for your plants, then you will need to use a timer to turn them on and off. It is important to stick to a regular light schedule so that your plants can grow properly.

Useful Video: TESTLAB Season 1 | TL#3 | Metal Halide MEGATEST | 600W & 1000W Bulb test


To sum it up, metal halide bulbs are great for a number of reasons. They’re energy efficient, they produce little heat, and they last a long time. However, they do have some drawbacks. They can be expensive, and they require special disposal. But overall, metal halide bulbs are a great choice for many people. Thanks for reading!


  1. https://www.amazon.com/dp/B017S4JQ7I
  2. https://www.amazon.com/gp/product/B005HJKIRO
  3. https://www.amazon.com/gp/product/B003JO6HN8
  4. https://www.amazon.com/gp/product/B00076IMY8
  5. https://www.amazon.com/dp/B07DCDQP5D
  6. https://www.urbanvine.co/blog/3-fundamental-types-of-grow-lights-used-for-indoor-urban-farming-you-should-know-about
  7. https://www.htgsupply.com/informationcenter/ask-the-doc/gardening-articles/guide-to-led-grow-lights/#section%202
  8. https://www.superiorlighting.com/lighting-resources/light-bulb-learning-center/hid-light-bulbs/what-are-metal-halide-light-bulbs/

Hello! I'm a James Miller, and I'm an expert in materials science. I learned different metal properties in the New Jersey Institute of Technology, and I know everything about all kinds of metal. That's why I want to share my experience with you.

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