I'm running a 6 lamp tek with 3 ATI blue plus 1 Atinic white, 1 kz purple and 1 ATI aquablue. seems plenty bright, lots of pop, great PE on my sps. I was running Gman bulbs, was a very white 10k look compared to this combo. I'd say this is about a 17,500k look. My zoas have never looked better either.
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