So I’ve got a 90 gal and I’m interested in making a stand out of aluminum. Standard size that’s close to my tank size is 48” but my tanks max length is 48.5”. Short version of my question is this…do I need to find extrusion that is greater than 48” and cut it down to exact size? Has anyone built a stand with 48” for a 48.5” tank? Is there a fix” plywood on top? Do tell. TIA.