I work for an LFS that has literally 1000's and 1000's of empty turbo snail shells in their live rock vats. I plan on taking out all of the shells in the next few weeks. What can these be used for? Will they dissolve in a calcium reactor since they are calcium based?? Or should i just throw them away?? I would like to recycle them some how. Any thoughts?? Any body want to buy them?? P.M. me.