For what it’s worth, we have 2 Current IC Pro on a 12” wide x 12” deep x 36” long tank. I did get a acro that’s about 6” below the surface to encrust the frag and is sprouting a branch in 2 months. Anecdotal evidence and not a chance I would use these for a SPS tank but sufficient to make me get all excited about polyp extension Tank is only 5 months old and upgrade plans in the works. These light will be relegated to a QT tabk