Well I came into some christmas money, and Im going to change our the bulbs on my frag system. I have a dual 250watt Galaxy ballast so, are Radiums the best bulb if I'm wanting more of a blue tint to my tank? Right now I have 15k Ushio bulbs and cant stand them. I just don't think they are the right fit for my ballast. I got good growth but terrible color. So who is using Radiums on Galaxy Ballasts? What do you think?