Ceramic Metal Halide Questions
I am interested in buying a ceramic metal halide lamp. I am confused about the vertical versus horizontal. I currently have an HPS lamp with the reflector hanging from the ceiling with the bulb parallel to the ceiling/floor. Is this vertical or horizontal? Also, my ballast is a 400 watt magnetic HPS. Do I need anything else to use the Philips HPS CMH bulb? Thanks in advance.