I also took a few readings at 100% on all channels just to see what the difference would be. The Radion XR15PRO's put out a LOT of PAR. However, I dont think many aquarists will run all channels on 100% percent as we tend to favour the blue 20,000k look over the bright 5,000k sunshine look. Though for heavy SPS tanks it may be worth ramping up to the 100% on all channels for an hour or so a day just get that extra bump in PAR. How effective, necessary or worthwhile that would be, i don't know. But I like that it's an option.
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