Lol they sure do! Mine spanned a densely packed 16"x12" area. Was my husband and daughter's favorite in the tank. I'm thinking of setting up a corner 45g that someone gave us as a qt/frag tank after I get the 180 up and running. I haven't done it yet due to electric bill concerns since it has a 250w mh for lighting. But this would be great to put "pay it forward" corals in as well