I was just wondering what type of setting everyone is using. Yes I understand schedule %, and the setting vary depends on types of corals in the tank… I have Red Sea 425XL G2 with Radion G6 - XR30 Pro x2 with their mounting brackets. I have Zoas on ground level and leather on the mid section and SPS on high top area with schedule 40%. My tank is only 4 months old and my SPS is only 2 weeks old since I placed in my tank. I rented the machine to measure PAR, and it was significantly lower than I expected. I tried to adjust to where I get close to 450-500 par on my upper level and I had to increase to schedule 90%. Does it sound about right? But then my ground level will be close to 290-350 for zoas… what do you guys say? Any inputs are really appreciated. This is huge learning curve for me especially as a new reefer.