Brand new 10K MH bulbs yellow

[Aquattro]

One manufaturer in particular sells 175w 10k, and from my experience, 60%-70% have that yellow color that makes the tank looked peed in....
Some are ok, but more often than not, at least last year, more were yellow instead of white.

Moral of the story...even if youhave some from the same place, the replacements certainly could be yellow.