Snails Snails and more Snails

So my aquarium is infested with Snails it has been for a while but it is getting ridiculous so today I spent 5 minutes pulling snails out of the tank. Only to discover that with every handful of stones there was a few large and hundreds of tiny little invertebrates.

So there are two options a new tank, or bring in some assassins ..... So after a bit of reading I have ordered some Clea helena from Ebay ..... we will see.

The snails pictured are sealed in a zip bag pre-execution to avoid escapes and to prevent contamination of the watercourse!