I have a 4 foot 6 bulb Tek light and I also love a blue tank. Right now I have two aquablue plus and four actinic plus. When the KZ is on, what color light does it emit? Is it a daylight type bulb that makes the reds etc pop (to take the place of a an aquablue plus) or is it a blue light (to take the place of an actinic)? Everyone following? So, if I was to get this bulb, which bulb would I replace it with?....keeping in mind that I still want a blue tank!