Watching the BRS video, a good PAR range should be between 250-350. These numbers seems pretty hard to reach with my lights. For Example: Radion XR15 Pro Gen 4 at 100% AB+ program. (With Diffuser) At the hottest points: (This means the highest PAR reading directly below the lights) 4 inches below water surface: 360 8 inches below water surface: 260 Most of the rock work is about 8-9 inches down, where I'm getting only 230 PAR. When testing PAR, I did turn off the pumps and return pumps. Maybe I'm testing wrong? Or do those numbers seems to be about right? A little confused .