I too am rather fascinated by snails, but I have one tank that gets literally THOUSANDS in a months time - and either I'm overfeeding to the farthest extreme or they are just lazy because I never see them eating anything but my plants. I clean out hundreds every week at water changing time and sometimes a second time midweek and then hundreds more at the next water change. I can only take so much fascination. I have plenty of algae eating fish and my overfeeding days are (almost) over. The other two large tanks have only a few and I feed them in a similar manor - the only thing unique about this tank is that is a 29 gal Acrylic rather than a 29 gal Glass. (Get the glass, Acrylic isn't ready for primetime quite yet)