Problem: Snails eating your water lilies. They can be a problem because low light slows plant recovery resulting in snail over grazing ie. holes in your water lily leaves. Solution: You might think you should get rid of the snails, but it would be more effective to balance your pond or water pot. Snails aren't bad since they help clean up by eating excess food, old vegetation and algae that would otherwise foul the water. Balance your ecosytem by: 1. Adequate sunlight which promotes vigorous plant growth and keeps them well ahead of the snail incursions. 2. Add fish such as Clown Loach or Fresh Water Puffer; some varieties enjoy a tasty meal of escargot and will eat many insects as well.