I was growing my Catt alliance species on a baker's rack with a 400 watt Metal Halide Pendant. The bulb less than 6 months old, but the ballast was probably 12 years old. This morning I woke up later than usual (I live in a 390 sq. foot studio apartment, the lamp warming up usually wakes me up in the morning), and it was much darker than normal. I didn't remember turning off the timer. So after some choice words, I showered, got a cup of coffee, and came back to address the situation with volt/ammeter in hand. Lamp was fine. The ballast finally gave up the ghost. No way I can afford a new one. Fortunately a good friend of mine has a west facing balcony, and has volunteered to take in the plants that will withstand a little bit of neglect and outdoor conditions in Texas (walkeriana and nobilior). I repotted the C. violaceas and put them in the orchidarium, I have no idea whether they will tolerate it.