8 radions on a 275 gallon tank. I was running at 75% max intensity for a while and even that was bleaching some of my LPS on the sand bed, but I removed the worst affected corals to a pico tank not too long ago and tried bumping it up to 80%. Tanks is 85% acro and montipora. So far I haven't noticed a difference, though a couple zoa polyps that point straight up stopped opening up during the peak hour.
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