Just as salt will harm snails or slugs on land, it will dehydrate snails underwater as well. For this method, use aquarium salt or kosher salt to make a solution of one cup per gallon of water. Do not use table salt or iodized salt – this has other chemicals and preservatives that are not suitable for your aquarium or plants. Once all the salt is dissolved, rinse the plants in the salt water for about 15-20 seconds, holding the roots above the water. After this saltwater rinse, rinse the plants in dechlorinated freshwater before planting in the aquarium.
