Well, I used to dig those up all the time at OC maryland when I was a kid. We have cold to hot arse weather here. The seller on ebay is selling them from florida??? so, seems like all they would need is to be aclimated and they should do okay, but, like mentioned, I would think they would destroy the sand bed as I have had to dig down a good 4" to get them. From that depth in your tank, you would more than likely be stirring up the layer thats supposed to be left alone.