i have a 40" oddysea light fixture with 2x250 MH and 4 PC's and i am looking to upgrade the ballasts. I was looking at the sunlight supply galaxy dual 250 ballast, but i was wondering if there is a preferred ballast by SPS keepers. Is there one ballast that may give me better color to my coral? ive noticed that coral tends to not look as good under my lights as the do at the store, or in friends tanks. Thanks !