Ratpack
Active Member
Hi all, I have a set of DM155e's over my 75 gallon tank. They are about 10" off the water and most of my SPS corals are about 6" below water surface. I am trying to figure out if I have them set too high and if that may be part of no polyp extension on my corals. I have PE at night, but very little in the day or at least that I can see with the naked eye. Someone suggested too much light intensity. Right now they are at 80% blue and 60% white / full. Do you think that is too much? If others have these lights or similar, I would love to know what you have them set at.