Thanks, I did change it lo lux per your earlier post but the calibration still has me confused. I can’t open your video for some reason. When I go into calibration I’m settings it wants me to input the number from a par meter so that the app can reference I presume.remember you need to calibrate if using it in the water, if notyou should be good just make sure you have Lux selected in the setting and not FC. above in the tread I posted a picture of that setting.