Yes, this is my first Radium bulb, my first MH actually altogether. I'd say the color is a very perfect balance of blue/white. I'm running it on a Galaxy select-a-watt ballast 250w/400w, on the 250w setting. I absolutely looooove the look of the light and was actually trying to decide if I should get the Radium 20K or the Phoenix 14K when ordering. I've never seen the Phoenix with my own eyes so can't really comment there. I was worried the Radium would be too blue, but it's really a perfect balance for me, my corals and fish really pop perfectly. Pics come out more blue than they truly are to the eye, so I just bring my blue down a little and it's pretty much exactly as it looks. Hope that helps a little.