175 Watt German Halides (inner bulb dark) with PFO

[fishtalk]

Hello, I have had my new Dual PFO ballast running 2 175 Watt German 10,000K halide bulbs for about 2 months now. They don't seem as bright as they were for the first 2 weeks. I know this is normal. My question is, why are the inner bulbs darkened (look chared inside). Are the bulbs not positioned correctly? Is this normal?

Thanks!!!

 

[pez]

Wasn't this a problem experienced with the Blueline 10KK lamps?

Sounds like you have some bum lamps to me.

-Tom

 

[Toadally1]

I ran into the same problem with the 175w blueline bulb. I only used it a couple of months before I went to a 400w 10k Ushio. I never did call to complain about it. The bulb was really dim from the start.

 

[monkeyboy]

Halide bulbs have a burn in period where they get a little yellower but this would make the bulb appear brighter IMO. Maybe you do have bum lamps, i would contact the supplier or the mfg. Is the inner pocket really dark? It should be a little grey because thats where all the halides are. HTH

 

[fishtalk]

Thanks for the replys. No, they are Hamilton, says it on the bulb and package. They were really bright in the beginning, but are now a little dimmer.

The inner bulb where the burning takes place is grey. Is this normal?