This tank, I dunno 3-4 years maybe. It got moved into the bowfront aquarium about 2 years ago from a standard 75 gallon. The copperband does super with the corals, I haven't seen him bother anything at all. The only thing he is hard on are Aptasia Anemones but that's a good thing, lol. Although I am getting ready to switch back to T-5 only lighting. While I was away in NC the other week one of the Halide bulbs shattered on my and the tank only had 50% of it's normal lighting.
I did some research and supposodly after power outages, if you are not there to switch the Halide ballast off the sudden influx of electricity can cause the bulb to pop. I don't think this is really common but since I am leaving for several weeks in September I dont want to take any risks. I got the Current NOVA fixture with 8 54 watt T5 bulbs so that will be a total of 432 watts. The tank is getting 300 now with the halides.