I would increase slowly. At 30 percent on all channels at a depth of 20 inches I was only getting between 150 par to 80 top to bottom. I used a par meter get the amount I of par I needed fir my mixed reef. I am getting 250 mid tank and 170 at the bottom.
srry for all the questions but what size is your tank and how high are your lights above tank. I have the photon 48 V2 and it is 12 inches above water line and my tank is 24 inches deep.