So I'm in the process of consolidating all of my tanks onto a shelving system, and a wee bit of a problem has popped up. It's a 36" shelf so I figured I could put a 20" 10g and a 16" 5.5g on each shelf (together). Unfortunately, the shelf size is rounded up, and the tank size is rounded down. Also, the shelves have a little bit of a lip. As a result, here's what I get when I try to put a 5.5g next to a 10g: If it's not clear, about an inch (plus a little bit) is hanging off the side, and the tank isn't level (half isn't touching the shelf) because of the lip. The question is, does anyone have a really clever workaround for this? Technically I can just move both 5.5gs to the bottom shelf, but then I'll need to buy another 36" light and I'll have an abundance of extra space on the 10g shelves (and no room for my QT!). Ideas/guidance?