Why cant i just go to the store and buy a cheap halide shop light and replace the bulb? I can get a 250watt fixture at Lowes for $5, or a 150watt "aquarium" fixture for $150.
Mine is on a freshwater tank but yes i did use the same bulbs but they have a green light that I hate. It makes my water look green but if you look in my sump it is clear.