Tag Archives: phlizon

How to evaluate growlights- Part One: Phlizon 600W LED

Disclaimer: Blue/Purple grow “lights get the job done”. But do not expect more than that.

This article is a rant.
Its subjective, but backed with sources, experience and knowledge from over four years of growing with alleged top notch technology.

People are pretty simple if it comes to marketing. Everyone wants to buy the best valued components for the best price to get going. If you ever build your own PC or a drone you will know what im talking about. 
Creating a grow setup was a simple task ten to twenty years ago. You just had to go to one of these grow shops, where you talked with a clerk to get the best out of your budget for your operation. You got a tent, a HPS light, soil, nutes, seeds and some ventilation. Online and offline sources were limited to a few books the old masters wrote.

With spreding legalisation many companies jumped on the grow train trying to advertise their products to you. And i have to admit: They are good at it!

Google results for "grow light"
Google result of  “grow light” … That says it all.

Just google “grow light” and you are flooded with the infamous blue/purple spectra of common grow lights you find on amazon or alibaba. But a great search engine optimization does not equal the quality of the product.

False advertisement

To be honest: There is nothing wrong with running these lights. They are getting the job done. They will not get you near the results you always see on the famous pictures circulating on the internet. The lights are often praised with heavily exaggerated numbers. I will discuss the most bought LED grow lights from amazon.com and show you whats wrong with them.

Critical cannabis in flower
Get back to me, if you manage to do this with a single Phlizon 600 W. I did this with a 310 W light. So yours should be at least in the ballpark of my result. 😉

Example One: Phlizon 600W LED

Phlizon light from amazon
Phlizon 600W LED light. The hangers and hygrometer are actually useful. Pic from amazon.com


NO REFLECTOR NO DANGER- Many others’ grow lights are used led spotlight reflector to make the light look beautiful, but we don’t use it because the led reflector is not heat-resistant. If a short circuit occurs,reflector at 80℃ is easy to melt and fire. we do not use the reflector, we can not give up the safety beause of beauty.

Amazon Description

Reflectors are a thing of beauty huh?
Phlizon claims, that reflectors are useless and just melt, if there is a short circuit.
Do they assume their light will short curcuit at one point?
LEDs are emitting light in all directions. It actually enhances the optical properties of a light if you use reflectors. They just ditch them, because they think its just a cosmetic element. You actually need them to focus the light more in the direction of the canopy.

FULL SPECTRUM- We did lots of experimentation to ensure that this full spectrum design promotes plant growth. It includes universal Blue Red IR UV and white light provide everything plant desire in the natural sunlight. The expensive IR UV led promote plants to defense mechanisms, blue and red led is essential light for plant growth.


Amazon Description

Okay! Thats bold. The spectrum is one of the least “white” ones you could imagine. Its mainly blue and red. The McCree curve, where you can see, what intensity distribution your light should have is vastly different from Phlizons “white” light. White light is created if the spectrum contains of every wavelengths in equal parts. Its fine to build an only red-blue light, but do not call it white.

McCree Curve vs the phlizon spectrum
The McCree Curve behind the “full spectrum” of the Phlizon 600W spectrum. You get an idea whats missing here.

DOUBLE SWITCH- Veg and Bloom button have different function. Veg switch: It’s blue led and white led. For seeding or young vegetative growth,you can use Veg switch only. Bloom switch: It’s red led and white led.for flowering/blooming,you can use both Veg and Bloom switches. View Angle of LEDs: 90°and 120°


Amazon Description

Thats actually cool to save money on energy. I really doubt that your plants do well under one of these lights switched to veg, but useful nontheless. Good LED COB or Quantum Board system got a dimmer as well to do save energy.

COMPARE TO HPS/MH- The 600W LED grow light can replace traditional 400 watt HPS/MH while consuming only 108 watts! More effective coverage area than any reflector series lights. perfect for a 2x2ft growing area at 24″ height. The difference of us is that we use double cooling fans. Can most extend the light life.


Amazon Description

There is so much bullshit in here…
WHY would you name it a 600W LED if its an ACTUAL 108 Watt LED claiming it will replace a 400 Watt HPS
It will not even come close to a 400 Watt HPS output. The only honest fact in there is, that this light is perfect for a 2 x 2 environment. No grower with the right mind would setup a REAL 600 Watt light in that, nor a 400 W hps. 
What other purpose is there but to confuse the customer?

More confusing info

Screenshot of lamp info
What color is 600 W? The wattage is 108 Watt, not 600! From amazon.com

The made up 600 W are pulled entirely through the hole descripton. You can actually light up an area of 1.44 m² with a high quality 600 Watt LED light. This area is about 4x bigger than the 2′ x 2′ space advertised.

PPFD values from Phlizon amazon lamp
PPFD of 260 at 24″ distance is  about 1/4 of the optimal value. From amazon.com

They also claim that a hanging distance of about 24″ (61 cm) is the perfect height. I will not believe them any further but a PPFD value of 260 is way below the 700-1000 a high quality COB/Quantum Board light will deliver.

Conclusion: Phlizon 600 W

  • No, it is nowhere near a 600 W LED light. It is a 108 W low quality LED. You can replace your 100 Watt HPS with that, and will be happy, that this abomination will run a bit cooler.
  • No, the spectrum is not the perfect fit for your flowers. It is mass produced lowball asian LED that get put into mass produced low quality LED arrays.
  • You need actually 6(!) of these to light up a 5′ x 5′ tent. Thats about the size a high quality LED with 600 actual Watt could light up. That will cost you about $540. Buy a real light instead.

Do not buy this light if you expect a high yield, high quality harvest.

Buy this light if you just want to take a look into the hobby. But you might want to upgrade as soon as possible….