light problem

Hi all, I have a Red Sea 90 over my 25g 18"x18"x18" cube and I am trying to figure out the right setting for it over my tank. Currently the light is 8" above the water surface and I run both blue and white channels at 50% from 7:30am to 7:30pm with an hourly ramp up and down period. I...

Hi all, Firstly, I'm new here. I joined yesterday after lurking in the shadows un-registered for some time. I really love it! I've got a 30gal Red sea. I'm having some trouble with my AI Prime 16HD light. I think I know the answer, but you never know... I'd taken the light off the tank...