You can send me all of them. My puffer's snail habit is running my finances into the ground. It's like a bad crack addiction. Haha
You would be very surprised at how much waste snails can produce. A lot of people will say just leave it. Personally I have tried breeding snails in a 1.5 gallon jug I have, and you would not even imagine how much waste is at the bottom of that jug in just 1 night. And the only thing I leave in it iis the plant that they came on from the store.
Well, with that said I can't really give you any advice. haha. Most people will say to put a piece of lettuce in there overnight. Most of the snails will attach to it to eat, and then you can just take that piece out. There are chemicals made to kill them, however I don't think they are very safe for your plants or fish. So others will say to just keep them. Without a fish to control the population, they WILL breed, very rapidly. It is possible that you will be overrun.
I don't really know what I'm suggesting. It's a tough decision, especially on a 5.5 gal
tank. Might be easiest to just simply try picking them out with your hands, and the lettuce idea. I hope that helps you some.