The MTS have gotten right to work. I put a handful in each tank and there are always a few in sight, all times of the day, sifting slowly through everything. I cannot wait until I have hundreds. I have 2 or 3 smaller bladder snails, that are growing at a ridiculously fast rate. The big one has stopped growing. I suppose they will breed eventually? Not sure I I'm a fan yet. I like Ishmael just fine, but I don't want hundreds of these guys. Now, the ramshorns are the funny thing. I have 1 giant snail left of the handful I bought, the others died. He is alone in his tank. The other tank, however, has had babies and more babies, and then more babies. There are no adults, just more and more babies. I cannot see where they're coming from - no eggs that I can see, so it's a bit odd. I can give them to my fish guy. I'm going to give him everything that gets out of control in my tanks I'll add pics sooner or later.