I think I'm going to go with the bleach. I don't think its to bad of an infestation. About 90 seconds in the bleach bath sound about right?Bleach should work just fine. I bleached some java moss/fern I took from one of our show tanks (I work at a LFS) and did a ~20:1 bleach dip. There were probably 80 snails in the bunch and I haven't seen a single live one in my tank since then. If it is really bad, you could probably get away with a 15:1 solution. Java moss is basically impossible to kill.