Here is a nifty portable frag rack that should make trips to the local frag swaps a whole lot more convenient. Building An Obsession, an acrylic fabricator that has lots of sweet goodies, showed this off a little while back, and it is completely awesome in a number of ways. For one, this frag frack stacks numerous shelves on top of each other, but keeps them separated thanks to the holding post design. The trays can be set at varying distances, allowing for space for taller frags or for numerous trays to be stored closer together. The design of the post also locks the trays in place, preventing them from falling on top of the corals on the shelves below.