This set of 2 Aiga MAREVA preventive winterization products - 5L - 161018U is ideal for pools up to 150 m of water. It has several functions: anti-algae, anti-bacteria and anti-limescale. These products are to be used during the winter, when the pool water temperature is below 16C. Please first clean the filter, the water line, check the pH and then pour the winterizing product. Compatible with all treatments, they are guaranteed without copper sulfate, EDTA and polyphosphates. In the spring, use the usual regular maintenance product again. These products will take care of your pool throughout the winter: so you can swim immediately in the summer! Advantages : Ultra concentrated liquid Prevents scale deposits, algae and bacteria growth Improves water clarity and transparency Protects water during winter Better for the environment and your health: guaranteed free of copper sulfate, EDTA and polyphosphates Compatible with all other treatments Makes it easy to put the pool back in service in the spring Large quantity (5L per can) for intensive use Characteristics: Use: when the water temperature is below 16C Dosage: 0.5 to 0.7 liters of multi-active winterization per 10 m of water to protect Chemical substance: PHMB Compatible with all other treatments Quantity : 5 L per can Ref. 161018Ux2 Instructions for use : How to winterize ? 1) Clean the filter. The annual cleaning of the filter is essential to avoid the creation of a nest of algae, the scaling or the creation of a privileged passage which would damage it and make it ineffective. 2) Clean the water line with a suitable product (do a shock treatment if necessary) as well as the skimmer baskets, the pump prefilter, the back of the projectors and the inside of their niche. 3) Check the pH and adjust it if necessary. 4) Sweep the pool and pour the winterization product that will take care of your pool all winter long. The sweeping of the pool can be done manually or automatically depending on the model of broom you have chosen. Pour multi-active winterizing directly into the pool in front of the outlets and let the filtration run for two hours. Dosage : Use 0.5 to 0.7 liters of product for 10 m of water; let the filtration run for at least 4 hours. Depending on the volume of your pool: Pool of 0 to 20 m: 1 liter of multi-active wintering product Pools from 20 to 35 m: 2 liters of multi-active wintering product Pools from 35 to 50 m: 3 liters of multi-active winterizing product Pools from 50 to 70 m: 4 liters of multi-active winterizing product Pools from 70 to 90 m: 5 liters of multi-active winterizing product Pools from 90 to 120 m: 7.5 liters of multi-active winterization product Pools from 120 to 150 m: 10 liters of multi-active wintering product Packaging : 2 x Aiga MAREVA preventive winterization products - 5L - 161018Delivered in their original packaging