PARsource Spotlight Vol. 13 Issue 3



Daystar Reflector

When you are growing with Metal Halide or 1000W HPS lamps and need to have a protective glass lens, consider using PARsource's Daystar Reflector. The Daystar Reflector has many of the same characteristics of the GLX Reflector, including MIRO 95% reflective material for a broad and even coverage. The advantages of the Daystar Reflector include a built-in lens system and passive venting to reduce the temperature inside the reflector.

The passive cooling helps increase the life of the lamp and reduces lamp depreciation while the hinged protective lens allows for easy maintainence.

PARsource's Daystar Reflector is excellent for growth chambers and research facilities.

The Daystar can only be used as a remote system and comes with a glass lens and a 15ft. cord set from the reflector that attaches to the ballast.

Click HERE for more information on the Daystar Reflector.


To ensure proper troubleshooting, please follow the steps below when replacing a lamp.

  1. Disconnect power to the ballast. Removing/installing a lamp into a powered ballast can cause ballast and/or lamp failure, and is a safety hazard. Always remove power from the ballast before performing any maintainence.
  2. Remove and replace the suspected bad lamp with a known working lamp.
  3. If the lamp is cool it should start immediately. If it does not ignite, allow 2 minutes for the ballast to attempt to re-strike the lamp.
  4. If the lamp does not ignite, power down the ballast and attempt another known working lamp. This reduces the possibility of component-level incompatibility due to manufacturing tolerances of the lamp and/or ballast.
  5. If both lamps fail to ignite, the assumption is that the ballast has failed and needs to be replaced.


  • Never remove a lamp when a ballast is receiving power.
  • Never have a powered ballast without a lamp inserted in the socket.


The majority of ballast issues, including premature failure, can be directly associated with high temperatures surrounding the ballast. Growers typically focus on the environment near the plant and do not consider the importance of the temperatures around their equipment Today we are seeing more sophisticated and expensive equipment in greenhouses. Some of this equipment inlcudes components that cannot handle high temperatures. Here are some tips that can help you extend the life of the lights in your greenhouse.

  1. Install remote ballasts. This allows you to place the ballasts in cooler regions such as a corridor rather than in the gable region of the greenhouse.
  2. Add fans that move air around the ballasts. Fans that move air around the ballast can reduce the ambient temperature.
  3. Add roof vents. The roof vents will vent off hot air that accumulates in the gable area of the greenhouse.