BAIT AND SWITCH. Ordered 150 watt metal halide, they sent 100 watt and charged me for the 150 watt, tried to tell me that the 100 watt ballast will be fine with the 150 watt bulb That never got. I called Hamilton technologies to verify if this combo is correct and they said absolutely not. They said 150w ballast with 150w bulb. E-mails phone calls no response back.