I thought Radiums were 20,000k for starters, not 10,000k, the other thing, going from what J&L told me, you can't use radiums unless you have an HQI ballast which the coralife units don't have to the best of my knowledge, and finally, there is no 175 watt Radium. (maybe they are 14,000k bulbs and the sales person just thinks blue = Radium, I'd say someone is mistaken.
Doug
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