kessil a160we tuna blue intensity

[Big Tuna]

What are you guys running the intensity of your kessil 160s at? I'm current running 3 kessil 160 on my deep blue 80 gallon tank that is 4'x2'x16". The lights are about 13" off of the top of the tank. Currently I'm running them on only 5 percent intensity. Most of my corals are zoas, mushroom, acan and a few sps.