I have about 6, 7 or 8 of these big snails roaming around my tank and they do a good job at doing their job. Anyway, last week as some of you know I bought my first two SPS corals ( I haven't killed them yet) I put them in the tank and when I got home from work, I am sure one of these snails is the guilty party, had broke off one of the branches on one of the two corals. That in its self is no big deal, but I plan on spending a few $$$$ on a frag package in the near future and I don't want these snails doing this again. Should I get rid of these big snails, I have some smaller snails doing the same job but they tend to stay on the glass and are coned shaped, I also have some small red legged type crabs in the tank, but I don't think they pose a problem to the corals. Anyway, whats your advice for me??