I've got snails....how do i get rid of them

here's a very elaborate idea that may be too much of a pain to use... get a 20 oz soda bottle, and poke holes in it big enough for snails to enter, but too small for shrimp. Inside the bottle, place cucumber AND... a little puffer.
 
You can squash them and feed them to your fish.That's what I did.
 
float some cabbage or lettuce overnight. In the morning take the cabbage out. That will usually help. Also try squashing 'em.
 
small snails can crawl to the top of the glass, flip upside down, and "crawl" on the underside of the surface of the water if there is surface tension. it's still probably better to sink it though...
 
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