No snail, it's made for aquariums he's been in a smaller tank while I was giving him daily treatment so this whole set up is a little over 2 weeks old the weird bubble things just showed up this morning the sun indirectly hits the tank for about 30 minutes a day I'm not sure if maybe that's doing it the only food he will eat is dried Mysis which I feed him one at a time but he's so small he eats them in pieces do you think other than a good clean a snail might help?