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How old are the bulbs? What is the Kelvin temperature?

April 26, 2017bulbs Kelvin temperature

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How old are the bulbs? What is the Kelvin temperature?

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I am trying to do everything I can to eliminate patches of Cyano that keep appearing on the substrate (DSB of fine aragonite). The Cyano has always limited itself to the substrate and I drain the frozen food, run Phosban, Purigen, activated carbon, skimmer is cranked up producing great skimmate, and a 40 watt UV sterilizer cleaned monthly. I also test all top off water (shows .1 Phosphate) and perform weekly 10% water changes with Coralife salt (aged for 1 week).