I purchased some plants from liveaquria.com, and put them in last Thursday. I didn't see any snails on the plants, but now all the sudden I've seen 6-8 snails in my tank, and they seem to be eating my live plants I am still in a fishless cycle, so I haven't been feeding anything into the tank. Should I keep the snails or get rid of them? I know they are good for algae control, but I don't want all my plants with holes in them either....