1.Do not use with other drugs in the same time. 2. Do not use in Hypoxic water & rainy days 3. After using the drug, please increase oxygen for more than 3 hours in time 4. It will work best used in sunny day and when the filamentous algae just sprout 5. Removing it promptly after the moss death, and changing water moderately 6. Aquatic grow-seedling and seedling stage and when shrimp, crab is about to decorticate in abundance or intensively used with caution 7.the water temperature below 20 °C, the dosage can be increased, but not more than 260g per 0.07ha• m [Withdrawal period]500 degree-days [Specification]China Veterinary Pharmacopoeia [Storage] dark, sealed, dry place at room temperature. [Package]Aluminum foil bag, 1000g/bag