Is it possible for metal halide lighting to become dull?

[chris009]

I just got a 250 watt HQI metal halide retro kit that came with a galaxy ballast, reflector, and phoenix 14k lamp. I got it about 2 weeks ago. It seems now that the lighting is starting to become less intense. Is this possible or are my eyes just adjusting to the intense light?

 

[b bauer]

was it new or used

 

[snipe]

Bulbs do have a break in period and if its used bulbs might be old. Usually MH bulbs need to be changed every 10 months to a year.

 

[lexluethar]

I've read they start losing their spectrum around 6 months, and should be changed every 6 months to a year.

 

[sh2000]

I run mine for 5 hours a day can i change the bulbs every 18 months ?

 

[sh2000]

Thank You