I have a SunPod HQI on my 24g AquaPod. I've only had it for a week or so, but the light seems fine to me. No blueness, unless the blue LED's are on. My only complaint to far is that it is LOUD. Maybe I got a bad unit, but it has an annoying rattle when the MH light is on. Not like a fan with a bad bearing... It's a different kind of rattle.