250w metal halide ballast. We have always loved metal halides to get the very best fast growth and color out of SPS corals for coral farming. We used to run them on all our SPS tanks. LED lights are nice, but they don’t really compare.
Note: The reflector in the picture on the right was sold separately.
All the ballast parts fit inside the blue ballast box. Heavy blue metal base on this ballast. Very limited use.