I'm constructing a 38gal brackish tank, and I was really hoping to have some blue legged hermit crabs in there along with the other invertebrates. However, my planned salinity is going to be 1.005 (maybe a little higher, just low enough for FW plants), and I recently read that blue legs can only go as low as 1.010. Is this true? If so, what other hermit crabs could I get? I've heard of Clibanarius africanus, but I can't find them anywhere. Thanks.