The hood tab in the middle is causing problems. Had to remove my Tunze 9001 skimmer because it was hitting the screw for the bracket. This morning, I examined more, and saw that if I move the light on the other side of the bracket, towards the return section, I may be able to fit the Skimmer back in. Turns out, that was right, and I just angled the light so it's above center.
Really liking the Prime light, now that I've gotten some time in there to play. Not the most user friendly thing, but the Clownfish really seem to like it. Before, with the PC's they were hiding in the back behind the rocks. Since I've put the light up, they are out and about swimming around, exploring the caves I have created and such.