Refugium Light?

[GreenSpottedPuffer]

I have had the same bulb over my fuge for a long long time now and need to replace it soon. Problem is, I don't know what kind it is and where I got it. Its a 23 watt CF. All it says on the bulb is "cool white". Anyone know of a good colored fuge bulb? Most of them do not have a K rating on the bulb, so I have had a hard time figuring it out. I may use a few of these over my new display soon too because its just going to be FOWLR with some macro. So I want them to be a nice colour. Anyways, any help would be great!