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Originally Posted by Gourami Swami
Ive heard cathode makes corals really glow... is that true?
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That depends really, any bulb with a UV spectrum will make certain colors on corals glow, its not just cold cathodes. On my setup I have 4 white to 2 blue; the colors look good but don't exactlly glow. In the future I might add 2 more white and two UV blue/purple bulbs to see how that affects things, but for right now I'm happy. HTH