Still tweaking around the setting, but its coming along! Here is a pic: no optics, with the temporal defusing glass top. It's really crisp, and I LOVE it. Corals are all open too. But without the glass, clowns were freaking out because of the glare shade everywhere. 50/50 60% power. 7 1/2" off the top of the tank, 24 1/2" from the bottom.