I have 2*250 XM 20K's over my 58, and I love them. Have had them running since June. Love the color that I am getting from them, and the growth has been really good -- and not just good for a 20K but for any bulb. I am supplementing them with 1 96 watt dual actinic PC, and 1 96 50/50 PC bulb. I have been thinking about trying the Radiums, but honestly I am so pleased with the XMs, I not sure I will try it.
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Current Tank Info: 210g reef and 65g reef
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