Light bulb failure

I came in last night to discover the 50/50 CFL light bulb on my new (bought it in May) Coralife fixture had burned out.
Supposedly the life of the bulb should have been at least twice that. The shop owner gave me a replacement, but did not have a 50/50 in stock, it is a
10K bulb. Works for the mushrooms, and zoanths, but the colors don't look quite the same.

yea, without the actinic blue corals/colors just don't POP. are they going to give u a 50/50 once they get them in?