MH longest bulb life?

So I have been running the same MH setup with the same bulb over the past five years. Yes I know the bulb is not putting out the same par value as the first day it fired up, but how long have your bulbs lasted without burnout/color change?
Specs: mogul base 400w Coralvue 1400K powered by a 400w Icecap electronic ballast.

Sunlight Supply Reflector:

 

Anywhere from 8-10 months being conservative and depending of the bulb type, for color change in my experience. I have had bulbs that only last 6 months and then the color change became unexceptable, that was a Uhsio.

I am sure you know that you will cook any corals under a new bulb in that fixture if you change out the bulb and do not accliamte the corals to the new light.

 

I had them for 11 years and I find when the center of the bulb gets black it's really time to change them. Cause of the expense and the fact that I only had fish I would let them slide as long as possible I had a bulb in the tank for two years straight and battled algae problems. Happier now with the new light set up. So is my wallet. Electric bill dropped.

 

I have had my Phoenix 14k in for over a year now. I really need to change it out, just dont have the funds right now.

 

In all honesty, human eyes are not enough to acurately determine the shift in spectrum.

 

Most definitely, a new bulb would fry my babies, So I am letting this go as long as possible until I upgrade to LED.

 

OMG! It Produces almost white light, attain 100 lumen per watt light output.
Very tough to maintain... ;\

 

Your bulb life is looking good and I have not seen any bulb running for this much long period. Almost all have either migrated to LED or bulb stopped working, but this one is amazing.