What do you mean?
The bulb physically looks white when it is off, but when you turn it on, it gives a very bright blue color.
Water states last night:
pH: 8.2
dKH: 8
Density: 1.025
NitRATes: 0ppm
Phosphates: 0ppm
Calcium: 440ppm
Magnesium: 1260ppm
Picking up a couple SPS corals in a bit... will post pictures later.