Answering your questions is like telling you what kind of car to drive. Really, only you can decide. Try to look around at other's tanks to see what white, blue and combinations of bulbs look like. You'll also need to know what type of animalw you'll be keeping, as that will influence what type of light you buy.
So, first figure out what you plan to keep and then you can figurewhat type of bulb. THEN you worry about the colors of bulbs!!
