I recently purchased a pair of XM 175w, 10k MH bulbs from Marinedepot. Everyone talks about how "white" these bulbs appear and how they can appear really blue during the break-in period. After 1 1/2 weeks (80 hours) of break-in time, the bulbs still appear much more yellow than my old 6500k coralife bulbs. It is unbearable to look at the tank without the vho's on. Shouldn't the yellowing be dissapearing by now or is it possible that I got a bad batch of bulbs? The bulbs are being ran on a Coralife Ballast containing one Blueline 10k bulb along with the 2 new XM bulbs.