LED Grow Lights have a lot going for them. They are more energy efficient and produce less heat than traditional HID lights. They produce more well-rounded spectrum of light that your plants will actually make use of. It is easier to target specific wavelengths of light for whatever your personal tastes or needs. Whatever your reason for buying an LED grow light, it’s clear the benefits are many. But, one major deterrent that people have to going the LED route, is the larger up front cost. And we’ll admit, it is hard to get past the larger up-front cost with LEDs, despite the longer life you will get. But not all LED grow lights are created equal, and not all LED grow lights are extremely expensive. Today, we are reviewing one of the more affordable lines of LED grow lights, KING LED.
King LED Grow Light Models
KING LED currently produces 6 different Led grow light models in their King Plus line of lights. Each model varies in the price, number of LEDs, wattage, and size. We’ve listed all the varying dimensions of each light below for you to check out, as well as both vegetative and bloom footprint measurements, provided by KING LED.
Max Wattage (Watts)
# of 10w LEDs
Approximate Veg Footprint (feet)
Approximate Bloom Footprint (feet)
# of Fans
310 x 210 x 60
3.2 x 3.6
3.0 x 3.4
310 x 210 x 60
3.4 x 3.8
3.2 x 3.6
310 x 210 x 60
3.6 x 4.0
3.4 x 3.8
400 x 213 x 60
3.8 x 4.5
3.5 x 4.2
400 x 213 x 60
4.0 x 5.0
3.8 x 4.5
400 x 400 x 60
6.0 x 6.0
5.0 x 5.0
Depending on the number of plants you would like to grow and how much you want to spend; you have several options available in the KING line. The LEDs have secondary focusing lenses mounted within the fixtures of two different angles: 90 and 120. The mixed lenses provide a perfect balance between light being focused directly below the light, and some spread. This helps the light reach all aspects of your growing space, regardless if you are growing with multiple plants or even just a single plant during bloom.
KING LED grow lights are constructed from a lightweight plastic polymer. The clean white plastic looks great and is light but sturdy. KING LED has manufactured its King Plus LED grow lights using double chip 10W LEDs. KING LED claims that the two 5W chips in each LED produce brighter light and operate more efficiently than the 3W or 5W LEDs typically found in LED grow lights. We aren’t electricians by any measure so we’re not 100% sure how exactly this makes sense. However, when comparing to some of the other LED grow lights we have reviewed, the claim seems to stand up to some scrutiny.
Compared to some of the other LED grow lights we have reviewed of comparable wattages; the KING LED seem to be the most efficient. Check out our blog post if you need a refresher between maximum wattage and actual wattage. Also keep in mind, there are lots of different factors to take into account with these grow lights such as light spectrum, light output, heat production and more, this is a very simple comparison of energy draw. These lights aren’t waterproof rated so be careful when you’re watering and monitor your room’s humidity often.
# of LEDs
KING LED 600W
10W (5W double chip)
Mars Hydro Reflector 96
The plastic polymer of KING LED lights doesn’t reduce heat as effectively as other aluminum light fixtures, but it still conducts the thermal energy enough to reduce excess heat in your growing space. Each light has anywhere from 2-4 fans (depending on the model) mounted within the fixture. The fans’ primary function is to cool the light fixture and remove excess heat. Although LEDs produce way less heat than traditional HID lights a small amount of heat is still produced, and the fans do a great job of negating it. The fans aren’t the quietest of all the lights we’ve reviewed but they’re not super noticeable. The double chip LEDs are great for heat reduction as well. Because they can produce comparable light output from a fewer number of LEDs, there is less heat produced overall.
LEDs & Light Spectrum
Each model of KING LED Plus model grow lights has a different ratio of LED types mounted in the fixtures, which allows the lights to cover the entire spectrum of light that plants can make use of for photosynthesis.
We like that in each light, there is a greater ratio of red to blue lights. Red light is the most efficient light for plants to use in photosynthesis. Although blue does provide some useful benefits, including inhibiting auxin synthesis, which helps promote bushier plants. Of course all types of light are present in sunlight so it is important that you provide your plant with each type of light because they all have different functions and benefits for your plans. That is why KING LED has mounted some yellow and white LEDs, in order to cover the entire visible spectrum. One thing we don’t love about the KING LED lights are the presence of the UV and IR LEDs.
Some people swear by UV light being beneficial for plants however, we are of the belief that they do more harm than good. Of course there is only one UV LED in each fixture so it probably can’t do THAT much harm, but we would suggest either disconnecting or just covering it up with some thick tape. Again, do so at your discretion. The same goes for the IR LED. Some people claim IR is beneficial to plants for certain reasons. However, plants can’t use the IR wavelength (700nm+) for photosynthesis, so it is mostly just heating up the plant. Again, you could just disconnect, cover or just leave the LED in, depending on your stance on this position.
Unfortunately, KING LED provides PAR data for only one of their fixtures, the 1200W Plus model. At a height of 1 meter (39 inches) the 1200W model produces a PAR of 1670umol, and at 2 meters (79 inches) a PAR value of 670 umol. Based on the 1200W values, and the spectrums produced by their LEDs, in addition the wattage info we have, every model of KING LED grow lights should produce a completely adequate amount of light with a full spectrum for your plants to thrive under.
Lifespan & Warranty
Each light is rated for more than 50,000 hours of operation, much higher than traditional HID lights. In addition, each light is also backed by a KING 3 year warranty. They also provide a 30-day money back guarantee. The manufacturer has pretty good customer services and you usually should hear from them within 24 hours. If you have an issue with your light within 180 days of purchase, they will even cover the shipping costs if they have to ship you replacement pieces. After that, you are paying the cost of shipping however.
Although the double chip LEDs have a number of benefits such as less heat production, and higher efficiency, there is one drawback we can foresee with these lights. Since there are fewer LEDs than in a comparable grow light, should one LED fail, it will have a greater effect on the total output than a light with more total LEDs. Of course, the fact that they are rated for at least 50,000 hours paired with the 3 years warranty alleviates some of that worry, but it’s something to keep in mind.
Cost is an important factor in selecting the best grow light. Buying, maintain and running growing equipment can be very expensive, so you want to make sure you can afford all of those costs. KING LED grow lights are an affordable option for someone who wants a cheaper LED, that still can pump out high quality light. These lights are durable, lightweight, run very cool, and produce a wide spectrum of light that will have you growing big, healthy plants with large yields while still being easy on your wallet. Definitely give these a look if that sounds like something you are into.