This Aga MAREVA Chlorine Cleaning Pack is the winning combination for a healthy and hygienic pool all summer long. In fact, one cannot go without the other. You need a regular maintenance product, and another more powerful shock treatment to be applied occasionally, even if your water looks good. Indeed, the shock treatment is essential for it to remain healthy. Slow Chlorine will effectively disinfect your water on a constant basis, once a week. Fast Chlorine is a shock treatment with a powerful disinfecting action, to be poured once a month. This type of treatment is more powerful than regular treatments and should be carried out once a month to combat the habituation effect of bacteria to slow chlorine. The 250g pebbles of slow chlorine are sufficient for 20 to 30 m3 of water and are placed directly in the skimmer or diffuser; the fast chlorine is in granular form. This combination is ideal for eliminating all bacteria, algae, impurities and other micro-organisms in the water. The combination of regular maintenance with a one-time shock treatment is the key to keeping your pool healthy and clear all summer. Benefits: Essential combination to keep your pool healthy and clear Effective action Quick to set up Compatible with all filtration equipment Large quantities, 5 kg x 2 Features : Slow chlorine : 5 kg of chlorine to disinfect in 250 g pebbles Size of the pebble: 8 cm Chlorine composition: 90.91 Slow dissolution Instructions for use: 1 tablet for 25/30 m of waterTo put directly in the floating/skimmer doserTo use about once a week Rapid chlorine 60 : 5 kg of shock chlorine for disinfection in granular form Shock action Disinfectant Anti-algae Type of chlorine: Chlorine 60 (stabilized compared to shock chlorine) Chlorine composition: 60 Instructions for use: For a quick chlorination, use 80g per 10 to be measured with the dispenser (1 dose = 100 grams) Before treatment, check that the pH of the pool water is between 7.2 and 7.6 to optimize the effectiveness of the product. For pools with a liner or polyester coating, dilute the product in a bucket before pouring it into the pool. To avoid damaging the liners, it is recommended not to exceed the dose of 0.2 kg to 0.3 kg of rapid chlorine per 10m to be treated. Keep the product out of reach of children. Product is dangerous if swallowed. Biocidal products should be used with caution. Before use, read the label and our safety data sheet for the product, which you can download below. In case of contact with the eyes, rinse carefully with water for several minutes. Do not use in combination with other products. Contact with acid releases toxic gas. Avoid release to the environment. Store in a well ventilated area. Keep container tightly closed. Packaging: 1 x Aiga MAREVA slow chlorine pebbles for swimming pools - 5kg - 250g - 111024U 1 x Aiga MAREVA fast chlorine 60 granules for swimming pools - 5kg - 111013UL Delivered in their original packaging.