Initial dosage: Add 2lt for every 100m3 of water.Maintenance dosage: Add 0.5lt for every 100m3 of water every week. The initial dosage should be repeated whenever the water is not clear. The above dosages are indicative and can be changed depending on the condition of the pool or climate change. Add the required dose of the product to a container of water and spread it around the surface of the pool. The product should be added when there are no swimmers in the pool, preferably in the afternoon.