A safe treatment without affecting shrimp or plants Biodegradable Contains Betal Nut Palm Extract Please Note: Remove carbon from your filter prior to dosage and dose according to packet instructions paying careful attention not to over dose. After 72 hours perform a 25% water change and use activate carbon in your filter for a few days. Some snails can also be sensitive to Genchem No Planaria, if snails are present, we suggest re-homing during treatment with No Planaria.