If you had to take a guess...where do you think the par is?@SweetReefOH ty bro. Need a par meter to find out but I have it 2/3 up the front glass on a rack centered on one of the xr15 g5 pro. I have 2 on my redseaxl300 and I’m using the ab+ template 12pp 2 hour ramp so 8hours total at 70% overall intensity. Had the radions for little over a month and ran redsea 90s at 100% both blue and white before that.