6 Best HPS Grow Light Reviews in 2021 – Top Advice

HPS grow lights are essential for indoor vegetation. Their importance can’t be overemphasized which is why we have decided to write about them. In this article, we will be giving you some necessary information about them. Not only that, we will be reviewing some of the best HPS grow lights available.

What Are HPS Grow Lights?

HPS grow lights are also known as High-Pressure Sodium Lights. These types of light fall under the High-intensity Discharge (HID) grow system. The other type of light under the HID grow system is the MH (Metal Halide) but we won't be discussing that now.

The HPS light produces a red spectrum light which is good for budding and flowering. Also, the HPS light is energy efficient as they make use of up to 40% of the electricity that goes into it to produce light. Finally, HPS lights are known to produce a great deal of heat which is why users are advised to use cooling fans with them.

How To Choose The Best HPS Grow Lights?

image: amazon.com

We will be giving you some tips on how to choose the best HPS grow lights for you below:


Regardless of what you are buying, the cost is very important. In the case of an HPS grow light, you need to consider the price tag on the product before making a buying decision. This is because you do not want to buy products that will put a big hole in your pocket.

However, this is not to say you should go for the cheapest HPS grow light. What you need to do is to compare different products in your price range with the features they offer. With this, you will not only be getting a good HPS light but at a good price too.


PAR stands for Photosynthetically Active Radiation. Yes, radiation is a scary word but not to plants. This is because the PAR radiation helps in creating photons that produce light to help the plants grow. So, when you see an HPS light with high PAR value, go for it because it means it will help your plants grow faster. So, in conclusion, the higher the PAR value, the more photons the HPS light will produce.


You have a choice of choosing among the 150, 250, 400, 600, and 1000watt HPS grow light. The 150watt and 250watt HPS light are capable of covering 4 square feet and 9 square feet of space respectively. If you want to cover a bigger space, then you should be looking at the 400 watts and 600-watt HPS light. The 400-watt HPS bulb is capable of covering up to 16 square feet while the 600-watt bulb can cover up to 36 square feet of space. For large scale use, the 1000 watt HPS light is the ideal choice because they can cover up to 50 square feet.

Finally, note that if you use an HPS light bigger than the area you want to cover, you might end up burning your plants.


An HPS grow light needs a ballast to run and there are different types of ballasts to choose from. But, digital ballast remains the best option and this is due to many reasons. First, digital ballast is compatible with almost all types of bulbs. Not only that, they run cooler and they use less electricity. Also, it is advisable to go for dimmable ballast as they also help to protect the plants from burning.

Read more: 5 The Best CMH Grow Lights for Indoor growing

Top 6 Best HPS Grow Light Reviews on the Market

Below are some of the best HPS grow lights you will ever find.

1. iPower Horticulture 1000 Watt MH Digital System - Best 1000 watt hps grow light

There are lots of impressive HPS grow light set but the iPower Horticulture 1000 Watt HPS Grow Light System takes the crown. This system comes with a lot of accessories which will most likely cost more when buying them individually. First, with its digital dimmable electronic ballast, you have an option of dimming it by 50% and 75%. Also, it supports input of 120 volts and 240 volts. Not to mention, unlike some ballasts out there, this ballast is noise-free. The only sound you are likely to hear from this ballast is that of a small fan in it.

Also, it comes with an 8 feet-long heavy-duty power-cable that ensures that you don't experience any flickering from the light. Again, it has a 1000W MH bulb with a temperature of 6000K. This bulb has an optimized spectrum and high photosynthetic active radiation (PAR). With this PAR feature, rest assured that your plants will grow and flourish fast. The manufacturers also included a pair of adjustable ratchet clip hanger rope which is 8ft long. Besides, the rope can hold up to 150 pounds of weight.

Furthermore, it also comes with a 7days, programmable digital timer with double outlets. Whilst this timer can be confusing, you’ll love it when you finally get the hang of it. As we all know, a good grow light needs a reflector. This one is no different as it comes with a 19-inch wing reflector with up to 4’ x 4’ light coverage. Besides, it has a reflective capacity of 95%. Finally, ensure you use this set with proper ventilation to prevent the burning of your plants.


  • It comes with a strong rope ratchet
  • Easy to assemble
  • Ballast is quiet
  • The light supports excellent harvest


  • Might be too hot especially when there’s no ventilation

2. Sun System 150W With Ultra Sun Lamp - Best 150 watt hps grow light

If you are running a small grow tent, then you should consider the Sun System HPS 150W Grow Light System. It comes with all the necessities for indoor vegetation except a bulb. The absence of the bulb can be an advantage or a disadvantage depending on how you want to look at it. It is a disadvantage because you will need to go through the stress of buying a bulb. However, buying a bulb yourself can be a good thing because you now have the choice to choose a bulb that suits your needs.

Also, it is a 150 watt light and it is energy efficient. Besides, it gives out up to 16,000 lumens of light which we can all agree is impressive. Not to mention, it is ideal for producing large and strong marijuana yields.  Again, it comes with excellent heat dissipation and venting system. With this system, rest assured that your plants won’t burn up. Furthermore, it comes with a reflective hood. This reflective hood is excellent for increasing the yield and output of your plants.

Finally, this is a grow light that is easy to mount and install. With the Sun System Grow Light 150 Watt HPS Grow Light, you do not need any special tool to mount the light. Just buy your favourite bulb, and you are ready to light it up.


  • It is lightweight
  • Good heat dissipation system
  • Excellent lumen output
  • Energy efficient
  • It comes with a reflective hood


  • It doesn’t come with a bulb

3. Apollo Horticulture GLK400LS24 - Best 400 watt hps grow light

The Apollo Horticulture GLK400LS24 400 Watt HPS Grow Light is another set that catches our fancy. It comes with lots of accessories and it has impressive features too. First, it has an input of 110V to 240V and it is also energy efficient. It also features digital dimmable ballast that can run at 100%, 75% or 50% which will help you save costs when you don’t want to run at full power. Besides, the ballast is CE certified and ETL listed which means you have an assurance that you will be getting quality ballast.

Furthermore, the HPS bulb has an output of 56,000 lumens which is brighter than most 400W HPS lamps out there. Also, its MH bulb has a brightness of 36,000 lumens which is also impressive. Again, with a lifespan of over 24,000 hours, this is one HPS light that will serve you for a long time. Not to mention, the bulbs light up fast and it takes a maximum of 2 minutes to light up. Moreover, because of its stable output, rest assured that the bulb won’t flicker.

Also, its circuit board has a sealed cooling fan which also helps to keep the ballast cool. Besides, it has short circuit protection which helps to protect the grow light’s components against fire. Again, its reflective hood is made from galvanized steel and German aluminium. Moreover, this reflective hood has a size of 24 by 17 by 9 inches which means it can cover an area of 3ft by 3ft. Also included in the packaging is a timer and rope hangers that can hold a load of up to 150lbs. Finally, the manufacturers deliver the set discreetly.


  • It comes with a large, quality, hood reflector
  • Energy efficient
  • Stable output
  • It has digital dimmable ballast


  • The reflector doesn’t have aluminium on all sides

4. VIVOSUN Hydroponic Air Cooled Reflector Kit - Best 600 watt hps grow light

The VIVOSUN Hydroponic 600 Watts HPS MH Grow Light is another good option for indoor growers. It comes with an HPS and MH bulb which gives the user an option depending on their choice. Besides, these bulbs have a high Photosynthetic Active Radiation value and optimized spectrum for better plant yield. Also, it has a colour temperature of 2,100K. Not to mention, it has digital dimmable ballast that can dim to 75% and 50%.

Furthermore, it comes with a strong 120V power cable that is 8ft long. Also, the output is very stable and you won’t experience any flickering when using the set. We also like its state-of-art internal cooling fan that helps in heat dissipation. Because of this fan, you will find that the heat in your grow area is reduced by up to 25%. Again, it comes with a reflector made from diamond Mylar material. This reflector is super-reflective and dispersive. So, rest assured that light will hit every angle of your grow area.

Also, it comes with a 24-hour mechanical timer and a pair of 8 feet rope with 150 pounds capacity. Finally, it is easy to assemble as it comes with a well-detailed instruction manual.


  • It comes in a "ready to use set"
  • It has an advanced cooling fan
  • Digital ballast is dimmable
  • Diamond Mylar material is very reflective


  • The MH bulb burns out quickly

5. Yield Lab Horticulture 400W HPS Grow Light

The Yield Lab Horticulture HPS Grow Light is another grow light option for those with a small indoor grow place. With its closed air-cool reflective covering; the light from the bulbs will be hitting your plants directly without wasting any light. Besides, it has the capacity of covering over 4 square feet. Also, it comes with digital dimmable ballast that can reduce the lumens and heat of the light to 50%. Because of this, you will not only get to reduce energy costs but also prevent your plants from burning.

Furthermore, the light is ideal for the blooming stage of the plant. This is due to its improved Photosynthetic Active Radiation value. Not to mention, it also has a special lumen feature for boosting plant growth. Also, its steady power output means you won't experience any light flickering. Again, the manufacturers also included an analogue timer in the packaging of the grow light. Not only that, but it also comes with a detailed 12-week grow guide to help you through your growing process.

However, the grow light set doesn't have an internal cooling system but it has duct ports for attaching fans. Also, make sure the room has a good ventilation system to ensure that the plants don't burn up. Finally, the ballast and bulbs have a 3-year and 1-year warranty respectively. Besides, the manufacturers also promised lifetime support to all their customers through the mail. So with this, we do not see why the customers won't be satisfied with this product.


  • It runs quietly
  • Highly reflective hood
  • 3-year warranty for ballast and 1-year warranty for bulbs
  • It has digital dimmable ballast


  • Doesn’t have an internal fan

6. TopoGrow 1000W Double Ended HPS Grow Light Kit Fixture

Last but not the least on our list is the TopoGrow 1000W Ended HPS Grow Light Kit Fixture. It comes with a double-ended HPS bulb with a colour temperature of 2000K. Not only that, it has an impressive lumen output of 145,000 lumens. With this light, you will be getting over 30% more energy than the everyday high-pressure lamp. Not to mention, it comes with irremovable ballast that can to 75% and 60%. Again, it runs on 120V/240V. Besides, this light also energy efficient which means you will be saving more than expected when using it.

Furthermore, it has a high PAR value which helps in plant growth. Its reflective hood is also impressive as it is made from high-grade European aluminium with 99.85% purity and 95% reflectivity. Because of this, your plants will be getting all the necessary light they need for growth. Also, it comes with a pair of strong 1/8" rope hangers and metal hooks for hanging. Finally, we like its high-temperature lamp holders. These holders can withstand the heat that comes from the bulb without giving way.


  • It has very bright lights
  • Dimmable ballasts
  • It has a highly reflective hood


  • None

Pros and Cons of HPS Grow Light

You might be wondering what the advantages of an HPS grow light are and what the downsides of using them are. Well, worry no more because we will be writing about that below.

Pros of HPS Grow Light

One of the biggest advantages of the HPS bulb is because of the amount of light it produces. The HPS bulb is capable of producing up to 155,000 lumens per 1,000-watt bulb. They also have a reddish/orange colour which makes them ideal for plant growth. This is because it is scientifically proven that red/orange light pushes the plant to want to bud and flower.

Besides, the HPS grow light are energy efficient and they can help you through your grow cycle. Also, HPS grow lights are available in kits which mean you can get almost all the light and accessories in one place.

Cons of HPS Grow Light

HPS grow lights produce a great amount of heat that can burn up the plants if you do not monitor it well. This is why it is advisable to have good ventilation and heat dissipation system when you want to use the HPS light. Also, the HPS needs additional hardware to achieve a desirable result.

Some of the hardware includes ballast, timer and reflective materials. Not only that, because of the presence of mercury in HPS light, you need special care to dispose of them.

Not to mention, HPS grow lights' effectiveness tends to diminish over time. So, because the HPS bulb still turns on doesn't mean it is still working. And sometimes, the time when it loses its effectiveness isn't known which might lead to your plants going bad.

FAQs on HPS Grow Lights

Are HPS lights safe?

ANSWER: HPS lights are harmful to the eye and oftentimes, the damages are irreversible. So, make sure you use protective eyewear any time you want to be in a grow room with HPS lights.

Is HPS better than led?

ANSWER: LED is better than HPS because LED is not harmful and it has a better yield. To put this in context, HPS lights have a yield of 0.5gramms per watt while LED light can give you up to 1.5gramms per yield.

How many plants can a 600w HPS light grow?

Answer: A 600-watt HPS light can grow 16 plants.

Can HPS bulbs explode?

Answer: It is possible if you keep touching the bulb. It can also explode if it comes in contact with water.


We have come to the end of this article on the best HPS grow lights. And, to make a quick recap; we explained what the HPS light is. We wrote about the pros and cons of a grow light and how to choose the best HPS grow lights. We are sure you learnt a lot from that and we are positive that choosing an HPS grow light will be an easy task after completing this article. We also answered some of the frequently asked questions.

Finally, we wrote reviews on some of the best HPS lights you can find. We made our choice based on many reasons but quality and durability was our main concern. All the products we reviewed are of high quality. But in the end, we settled for the iPower Horticulture 1000watt HPS MH Grow light. This is because of many reasons but its dimmable ballast, reflective hood and bright bulbs particularly impressed us.

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