They sleep buried in the sand, so at a minimum, you'll have to provide a plastic bowl with 3+ inches of fine sand. I got mine about a month apart, and they both did fine in QT (more an observation tank - after 2 weeks or so and a round of Prazipro I put them in the DT, where LW #1 started swimming around hunting right off the bat. LW #2 buried itself in the sand for about a month - I had given it up for lost - and then one day appeared out and about, hunting with her? buddy. They are always together now swimming amongst the rocks, on the hunt for something tasty.