Why are Double-ended lamps different than Single-ended?

Double Ended (DE) HPS grow lamps are typically used by commercial growers with large spaces and high ceilings. DE HPS grow lights produce higher intensities of light due to the design, construction and internal pressures of the arc tube (light generating source). The physical design and shape of the DE grow bulb provides a consistent positioning of the light source allowing reflector manufacturers to optimize the focus and footprint of light over the plant canopy.

EYE HORTILUX DE HPS lamps have been life tested for thousands of hours to ensure you are receiving a quality and reliable lamp which will operate with consistent performance on the most popular DE electronic ballasts. EYE HORTILUX DE lamps are the only DE lamps designed and manufactured in the USA.

What Makes the EYE HORTILUX DE Different?

1. Design and Manufacturing vs Competitors

Patented* lead wires provide a sturdy lamp for safer connection within the DE socket

Spot welding (1) keeps the braided wire from fraying or coming apart. The butt welding (2) seamlessly connects the braided wire to the lead wire, allowing for a safer, more reliable connection inside the DE socket. (3) The end of the competitor’s braided wire is fraying and could cause arcing inside the socket. (4) This crimp connection of the competitor’s lamp is prone to breaking, separating and not connecting properly inside the DE socket.

(*US Patent #9892905)

Unique coiled support frame allows for expansion and contraction of the arc tube

(5) The TWIN COIL SUSPENSION (TCS) stabilizes the arc tube during operation (above). As the arc tube heats up it expands and as it cools down it contracts. The coil support frame allows for this expansion and contraction. All DE reflectors are designed to efficiently reflect the light produced by the lamp based on the arc tube being positioned in the center of the reflector. If the arc tube changes position inside the lamp, it will change the optics and efficiency of the reflector. (6) The competition uses a two piece design. The bends in the wire will move from side to side because their spring doesn’t have the give our internal workings do. Once this metal bends, the arc tube will not be positioned properly.

2. Made in the U.S.A.

EYE HORTILUX® Grow Lamps are manufactured in our factory located in Mentor, Ohio

AT EYE HORTILUX, we know that down time due to lighting issues means lost time and money for your grow. That’s why we use high-quality components and inspect every lamp at multiple steps throughout the production process. Check out the video of the factory in action here

3. Glove Included for Safe Handling

To keep DE glass free from oils and other imperfections that could adversely affect performance, wear the glove that comes in the box when handling the lamp.

4. Exclusive EYE HORTILUX Chemistry

Why is the EYE HORTILUX spectrum so different? We have an exclusive arc tube chemistry that no other manufacturer uses. Click here to learn more.


  • Compatible with e-Ballasts that operate at or above 100 kHz.
  • Completely lead-free.
  • Meets Federal EPA standards as non-hazardous waste.
  • Operated and tested before packaging.
  • Full One Year Warranty.


  • Produces higher yields than Single Ended HPS lamps.
  • Reduces lamp replacement costs.
  • Maintains results after multiple growth cycles.
  • Better spectral balance for increased plant response.
  • Outperforms competitive DE lamps in plant quality.

Take a closer look at our DE grow lights

DE Super HPS

DE Ceramic HPS