Ok, I've swapped it with one of my older 10K bulbs. The old one just looks SO much brighter than the 16K bulbs. A lot yellower though. Might try a 12K next time I replace them.
The one I just yanked out has some flakes of glass floating around in it, can't figure out where they came from, I don't see any chips inside it.
Oh, and I went out earlier and my Sebae clown was fine. Came home after about 2-3 hours and he was dead. No idea why. Nitrates are a higher than I'd like, about 25, but that shouldn't have bothered him. PH and KH are both 8, salinity 1.027. Looks like I'll be buying a LOT of fish in a few months when I go to Christchurch. If I can find some I want.