I recently was giving 2 hermies by someone I work with to keep in my office at work. Well they where not being take care of as I would like so I went out to get them some more stuff...their 10 gallon one level now is 2 levels and added a hammack for climbing. So anyways......I figured I would get some shells from online but dang I don't know where to shop and what size to get. From what I can tell both are in a 1 1/2 inch D opening shells (Give or take 1/4 inch). THey have no other shells that I think they would like so I would like to act quick in ordering.