Ya, That tank is HUGE if all you got is a hatching. I have all my hatchings in like, 6 QT rubbermaid containers. If you can't get a smaller cage you best bet is to put a bunch of little newspaper balls or other things to make the cage more like a jungle gym so your ball has tons and tons of spaces to hide under and by, otherwise getting him/her to eat will be a huge problem. Other than that good luck and welcome to a very, very addicting hobby.