Is there any reason not to use two acrylic pieces as the top to my tank? I have a 115 gallon 60 inches wide, so it's a little unusual and I'm having a problem finding replacements for the two glass pieces that broke when the metal hallides we put directly onto the glass (they are now suspended a fair distance off the tank.) I have, however, found a local acrylic dealer that sells acrylic scrap for a buck a pound, which is going to be quite a bit cheaper than getting custom glass cut. So... thoughts? Anyone?