I know there is a lot of expertise in a lot of different things here on this forum.... Are any of you well versed in how to work with walls made with steel studs? I have a two foot high strip of wall up high (above the big wall opening that our new tanks are installed in - the tanks are installed between two lab spaces), and I'd like to put a shelf up there to hold miscellaneous items. The heaviest items might be two metal halide ballasts (that I think are no more than 10 pounds). (EDIT: no more than ten pounds each.) What is the best, most secure way of mounting the short shelf standards that I am going to be needing up there?