Well, I've been hearing a good bit about theories on the calcium pills with vitamin D possibly causing problems in snails, if fed too often. I think I'm going to do a test on it. I'll probably mainly work with MTS (I can get babies to start from birth very easily, as compared to the other species of snails, the babies of those snails are too small for me to really see). Anyone interested in helping out with either the planning or run a "sister" test of their own? Or, if anybody knows of a link to a test/research already done on this, then it would be pointless for me to check it out. I'm curious on exactly how often you could get away with feeding the pills with added vitamin D without ill effects.