Well right now since Elysia is so small, I bought a small rubbermaid to put her in. I place her in there whenever I need to do something in her tank that requires her not to be in it like digging for poop, or cleaning and disinfecting stuff. I wouls suggest going to Wal-mart and buying a 90QT sterilite for 9$. Solder or drill some air holes in it, put some newspaper on the bottom, and maybe put one of his hides in there too if it will fit. Other then that I dunno what else to suggest.