600w hps grow light review

When it comes to HID lamps, I think one of the most efficient compared to its power consumption is the 600 watt grow light. It tends to produce a higher rate of lumens per watt than all the smaller ones, nearly as much as a 1000 watt would but with a lower heat output and power use.

Nothing will make those ladies bloom as a 600 watt hps bulb, believe me!

HPS Grow Light System for Plants – the basics

A complete system is composed of 3 main elements:

  • the ballast is a power supply unit, it regulates and shapes the electricity into a regulated flow in order for the bulbs to produce smooth constant light.
  • the bulb: 2 main types of bulb can be found for these lamps: HPS (High Pressure Sodium), emitting in the yellow-red band, ideal for flowering stages and MH (Metal Halide), more fitted for vegetative periods, using cool to warm white and blue bands.
  • the reflector links the 2 previous items, it has a socket to fit the bulb and a cable to plug in the ballast, and is designed to reflect as much light as possible back down on the plants.

HPS – high pressure sodium grow lights – 600W

Now let’s review some 600w hps grow light kit models and help you appreciate what you can find on the market.

The Vivosun Hydroponic 600 watt super high lumens grow light uses an HPS and MH bulb for different stages of growth. Easy to setup and is highly stable. HPS and MH are compatible with the ballast.


  • UL Listed 600 W dimmable ballast with builtin fan.
  • Runs on 120-240 volts power.
  • HPS and MH are high PAR value lamps with optimized spectrum for different plant growth stages.
  • HPS and MH are high PAR value lamps with optimized spectrum for different plant growth stages.
  • Includes a pair of 1/8 inch adjustable heavy duty rope hanger.


  • Needs an inline fan because of the heat it generates.
  • Use the ballast in the original bulb rating. Otherwise it might damage the bulb.

The iPower 600 Watt HPS/MH grow light has a digital dimmable ballast, a bendable wing reflector and a mechanical timer.


  • The ballast can be set to 50%, 75% and 100% of power and provides stable power output without any flickering.
  • Digital ballast produces 30% more light for better yields.
  • Wing reflector is thinner than air-cooled reflector, and can be cooler during use.
  • Provides best coverage for lighting plants.
  • Ballast is universal voltage 120-240 volts power.


  • Temperature cannot be controlled. Needs a cooling fan.
  • The wing reflector is not ideal for grow tents.

Apollo Horticulture GLK400LS24 400 watt grow light has a digital dimmable ballast, and uses powerful HPS and MH bulbs with an air cooled hood set.


  • Dimmable option allows for operating the light at 50%, 75% and 100% capacity.
  • Comes with a rope hanger with 150 lbs capacity.
  • Air cooled hood set is made of galvanized steel and aluminum.
  • Powerful lights, up to 56,000 lumens for the 400 watt HPS bulb, and up to 36,000 lumens for the 400 watt MH bulb.


  • Designed for a green house environment. It warns against using it in crowded spaces like apartments, community housing or in enclosed spaces.
  • Ballast needs a fan.

Yield Lab Horticulture 600w HPS Grow Light is a full-spectrum system for indoor growing and hydroponics. It comes with an air cooled hood set, a single HPS bulb, dimmable ballast, a free mechanical timer and a DVD guide for growing flowers.


  • Air-cooled hood projects all the light in the right directions, providing the best lighting for plant flowering.
  • Hood has 98% reflectivity, maximizing the light shining on the plants.
  • A tempered glass hood for higher heat tolerance.
  • Dimmable ballast capable of controlling light down to 50%.
  • Yield Lab 600W HPS bulb is capable of 90,000 lumens light intensity, 2,100k light, 24,000 hour lifespan and a one year warranty.


  • Comes with only an HPS bulb, you need to replace the bulb for the flowering stage.
  • Does not come with an inline fan to cool the bulb and hood set.

I hope you enjoyed this review and have a better insight on the various possibilities and issues offered by this kind of lights. Of course on this website you can find a lot more reviews regarding anything you may need for a successful growing experience!

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