I'm thinking of a snail for in with my goldfish. I don't know much about them though so I've got a ton of questions. How much extra waste would I expect? I think a ramshorn snail would be fun, I know they reproduce on their own and if possible I could save a egg or two from the goldfish to hatch into babies. How often do they reproduce? Do they do good living mostly on flake food and possibly any other food that sinks should the snail get it before the fish? Would the undergravel filter compete with it too much for food waste? Are they ok with a marble bottom?