I recently gutted my aqua medic spacelight, and replaced the ballast with the new Ice Caps(they are fantastic by the way ;D ), in the process I had to remove the pcs. I'd like to add a third 250w in there as I do have the room and need some blue. My concern is the protective glass is split in two pieces, and would like your opinion as to whether this millimeter size whole(this whole is in the middle of the fixture where my third light would go) will create problems for my corals. All opinions welcome