I don't use blue legs, I use dwarf zebras from hawaii, they seem far more docile. yes, they have taken out a couple snails in their time, but nothing like i have heard or seen in other tanks.

The worst 'reef safe' hermit I ever had was an electric orange crab (calcinus elegans) that ******* murdered every trochus and zebra snail i had in the 120 before i broke it down. (I think he might have killed some fire shrimp too)

needless to say, he's not going into the new tank.