I had it rev up to 75% before and the corals wasn't too happy so down to 65%.Led are very deceiving.I am getting 200 par on the sandbed at 65% with the light hanging 8" over the water.You just have to look at your corals and see how they react if you want to go higher %.Another thing to take into considerstion is that IMO,flow is much more important then lighting.
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