Description: Features: 1. Water purification: The algaecide eliminates excessive moss and algae, making the pond clear water. 2. Reduce and control algae: The algaecide decomposes dead algae and digests leaves, grass clippings and rocks, making the water in the pond clear and transparent! 3. High efficiency: The algaecide is made of safe and harmless compounds and will not cause harm to the fish ecosystem. 4. Easy to apply: No need to manually remove dirt, quickly and efficiently eliminate harmful moss, and control the growth of algae in water. 5. Good for fish: This algae repellent powder can significantly improve the health and lifespan of your favorite fish. Specifications: Name: Algaecide Weight: about 50g Application: aquarium, fish tank How to use: Use 2g of algaecide in 100 liters of water (for removing algae), 1g of algaecide in 100 liters of water (for prevention), use once every other day, use 2-3 times in a row. Change 1/4 water before each use. Package Included: Algaecide*1 Notes: Warning: 1.When using an algaecide, you need to add oxygen to the aquarium, so as not to consume a lot of oxygen in the water after a large number of algae death, causing other organisms to suffocate due to hypoxia. 2. When changing water, the water temperature difference should not be too large.