Quantum Horticulture


400 Watt HPS and MH Dimmable Digital Grow Lamp Ballast

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Reg. $133.99 Save $54.00
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The days of settling for just a few succulents on a windowsill are long behind. Technology has helped us bring the outdoors in and cultivate our quarters and corridors like never before. With the compact, yet powerful Quantum 400W Dimmable Grow Light Ballast, bringing quality, efficiency, and high intensity illumination to your indoor garden or garage greenhouse is as easy as finding an outlet. For those of us who struggle for our photosynthesis fix in the dead of winter, this electronic light ballast allows you to bring the same effects of UV rays under your roof with a higher lumen output than magnetic ballasts. It offers you complete control over a the growing environment. With a wide CAC input range, you can operate run this versatile system at temperatures as low as -22 degrees or as high as 131 degrees Fahrenheit. With a dimmer switch that allows you to control the output of this grow light, this is also an ideal system for professional horticulturists and amateurs alike who want a more stable environment to raise delicate plants. You can run this system at 100% or 75% power with its digital controls. Silent, cool-running, and ready for a generator without flickering when other circumstances are working against your precious petunia and pansies, this nimble hanging ballast is able to run at a 99.9% power factor and with either 120 or 240 Volt power outlets. This stable power frequency allows you to shut off all of the other lights in the house and rest easy knowing this grow light can be trusted to maintain the environment your garden needs. Engineered and tested by those who want this lamp ballast to stand up to wild conditions, the bearing fan is sealed and the resin coated circuit board was built to resist weather and withstand the most extreme atmospheric conditions possible. Striking both metal halide and high-pressure sodium bulbs, this system is not only the most-trusted in the industry, but also one of the simplest to install and keep running for the long haul. The Quantum 400 Watt Dimmable Digital Grow Light Lamp Ballast is the go-to for new hobbyists, professional growers, and every indoor gardening job in-between.


  • Run at 100%, 75% or 50% power to give you complete control over your indoor gardening
  • Strike both metal halide and high-pressure sodium bulbs
  • Accepts 120v or 240v power sources and includes power cords for each
  • Allows 50 Hertz to 60 Hertz
  • Runs 15% cooler than other digital ballasts on the market for a safer and more comfortable growing environment
  • Has a power factor of 99.9%
  • Most stable output frequency of any ballast
  • Higher lumen output than magnetic ballasts
  • Light weight and care free
  • Color: White
  • Warranty: 4 year warranty (3 year manufacturer warranty + 1 year VMInnovations warranty)
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