I have a 20 gallon fresh with a Lyre Tail Dalmatian Molly and a few cleaner fish. Some how we ended up with a snail. Next thing I know we have HUNDREDS! We noticed they stick to the plants so we took them out and cleaned them off but we still have snails. EVERYWHERE. Is there something other than removing them we can do? And we noticed a jelly on the leaves is that eggs?