I've done it to my tank. Measure the thickness of your glass, if its an older tank with thicker glass, you may be able to do it Check sites like glassgages.com to see how thick their tanks are that are made without a center brace, see if you are anywhere close. I replaced the center brace in my tank with two thick glass strips. I siliconed the glass to the plastic rim after sanding and cleaning the plastic to get a good seal. That was back in September, maybe august. Theres a thread in the DIY forum detailing it I believe. Only go with glass braces, not acrylic.