I have 3 hydra52s and have them at 14 awl, I really like the blending I get and subtle shimmer vs being closer. Great color and growth. Highest setting I have is the blues at about 70 and white at 65. Uv I have about 55-60 I'll post a pic tomorrow. What I've found is most people run leds higher than needed. It's more or less wasted electricity