Can you use different wattage HQI bulbs in your fixture without changing out the ballast? In other words, could someone go UP in wattage (i.e. from 150 - 200) without changing the ballasts?
I personllay dont think it would fire the bulb. But if it did, the ballast would be working WAY to hard and either stop working or melt and cause a fire.
Bulb/ballast wattages must match. A higher wattage ballast would probably blow out a lower wattage bulb and a lower wattage ballast won't light a higher wattage bulb.