Well i also had an invasion of snails which came in on some plants I bought, unknown to me at the time. I tried all sorts of methods - even to stripping the tanks and boiling the stones etc.
Then another fish club member gave, for me, the perfect solution. I bought two clown loaches and believe me Kelly i have not had a snail problem since. I have also grown to appreciate the clown loaches and enjoyed their antics. . They are also safe with the other fish. A chinese loach I had bought was not for it killed one of my angel fish by suckering onto it. However the clown loaches have done wonders and LOVE snails