What's the wattage on that 5200k bulb?
btw, when a MH bulb is built to go into a HPS ballast, thats called a "conversion bulb". They make them for people who are growing plants with a HPS ballast, and need a MH or MV bulb for a short while. That way they don't need to buy a whole new ballast. Their not very good for growing, but aparently really good for projectors. Good find.
