Q: Whats a K?  

When we mention a 3K, 4K, 6.4K or 10K lamp, the K refers to the Kelvin color temperature of the lamp. A red lamp has warmer colors, and a bluer lamp has cooler colors on the scale (2 is reddish, and 10 is bluish, for example.) Click here to learn more.

Q: Are the lamps Vertical or Horizontal? 

A: SunPulse lamps can be used in a vertical or horizontal position.

Q: Do you make an HPS lamp? 

A: Sun Pulse makes an HPS lamp, but it can never be used in high frequency electronic ballasts. Millions of dollars were spent by Sun Pulse Labs, and research clearly proves the HPS lamp cannot be used for electronic HID ballasts, ever. Like the typewriter, HPS lamps are a thing of the past. In addition, an HPS lamp is approx. 2.2K,( or 22% of the Sun) and has a narrow band of light. Red light also has the least amount of energy of all the colors of the spectrum. Why pay money to make light that has the least amount of energy? Click here to learn more.

Q: I don't see any spectral graphs offered by other lamp companies. 

A: A true graph of what a spectrum is, when you make mechanical light, includes the ballast, the bulb and the fixture all working together. If you change the ballast, the bulb or the fixture in that scenario, you subtly change the spectral information. It's not going to behave like the Sun behaves.

We don't fabricate spectral graphs to sell lamps. We don't pretend that one persons lighting system is like the next guys; ballasts and bulbs vary. Fixtures have a huge impact on how that light is, or isn't delivered properly. We don't make the graphs because the graphs that are typically provided are all tested in special chambers that the end-users don’t have at home.  We do make a graph with our bulbs, our lamps, in our fixtures, - all working together- and we produce the Sun to military specifications from 37".


Q: What's a Pulse Start Metal Halide? 

A: Pulse start metal halides are the next generation of halide lamps. The traditional lamps are called “probe-start” metal halides. Probe and Pulse just refer to the method of the starting sequence for the arc stream as it passes through the arc tube to make the plasma.

Q: Can I use my SunPulse lamp on traditional magnetic ballasts? 

A: You CAN use your Sun Pulse lamp on Sun Pulse certified electronic ballasts, or on an HPS core and coil ballast as a retro lamp. You could also operate the lamps on PSMH ballasts. You CANNOT use Sun Pulse Lamps on traditional “probe-start” metal halide ballasts.

Q: What kind of electronic ballasts can I use with SunPulse Lamps? 

A: Please refer to the website for a current list of SunPulse Certified electronic ballasts.

Click here for the SunPulse Certified Page

Q: Why the four different colors? 

A: There’s a lot of photobiology, plant science, light science and gas chemistry that really answers that question. In short, it depends on the application.  We make the different Kelvin colors in a similar way that nutrient recipes are different. We need certain fertilizers at certain stages of plant development, and now there are different colors of lamps that can be used at certain stages to enhance plant development.

Q: What does SunPulse Certified mean? 

At Green Applied Sciences Certification Laboratories receive electronic ballasts from around the world that are tested for compliance with Sun Pulse Lamps. This way every customer has certified ballasts that go with certified lamps, and the matched set will provide them with longer lamp life and create less wear and tear on the electronics. Sun Pulse Labs are the photo-biologists, the gas chemists, the lamps designers, the electrical and mechanical engineers, and more. They understand the plants, the end users, and how all of this works together.  Note: Warranties are voided when these lamps are used on non- certified electronic ballasts.

Q: What are the SunPulse lamp warranties? 

Sun Pulse Lamps (100w to 600w) have a 2 year warranty against manufacturer defect.
Sun Pulse Lamps (750w to 1000w) have a 1 year warranty against manufacturer defect.
Only use Sun Pulse lamps on Sun Pulse Certified electronic ballasts. Use of Sun Pulse lamps on non-certified electronic ballasts voids the warranty.


Q: Why does my new lamp seem to be flickering?  

 A: All MH lamps require a “burn-in time” so the gases inside the lamp can stabilize. When the lamp is new, it may show signs of flickering or color changes; this “flickering” may last up to 100 hours before stabilizing inside the lamp. There is nothing wrong with the lamp in the event of some flickering when its new, its normal.


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