You can if you like.
Or you could get whites that have a more blue spectrum, like 12k or 14k... Thats what I do rather than replace a white with a blue. I also like a blue tank as well ad it seems that my corals like the actual whites and blues better.
Hope that helps a bit.
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.