This MAREVA Pack is composed of a powerful treatment against mustard algae and two other products which will ensure for sure the total eradication of mustard algae from your pool, as well as a measuring jug. Indeed, these mustard algae, which represent a real nightmare for pool owners, are particularly resistant, and it is necessary to complete the anti-mustard algae treatment with an oxidizing shock treatment, Revatop, and then a Top 3 anti-algae clarifier as a preventive measure. This is the assurance of being rid of these algae composed of infected dust coming from the Sahara winds which tend to come back unceasingly, being very contaminating. First of all, it is advisable to check the pH of your pool, which should be between 7.2 and 7.4. Next, an intensive pre-cleaning should be carried out in order to remove the algae germs clinging to the walls; this is a crucial step for the treatment to be effective. Then add the three products one after the other in a spaced manner, using the measuring jug. It is advisable to carry out the treatment a second time for optimal cleaning, and a third time as a preventive measure. For the regions most exposed to the wind are more subject to this type of pollution, it is advisable after treatment to make regular preventive treatments to avoid that it does not return unceasingly, at a rate of 2 times per season. Please also note that it is important to clean all the material that has come into contact with the pool water (toys, inflatables...) to remove all the germs. Advantages : All in 1 pack ensuring the total eradication of mustard algae Prevents the return of algae Preventive action Ultra powerful purifying action Measuring jug for correct dose adjustment Characteristics : 3KG of treatment against mustard algae: Powerful elimination of algae 5L of REVATOP 12% algaecide: shock disinfectant action 1L of Top 3 non-foaming : Algaecide, anti limestone, anti rust, flocculant, clarifier, pH stabilizer 1 Measuring jug Instructions for use: If the pool is 20/30m: Day 1: 900g of Stop Algae Mustard treatment + 5L of Revatop 12%. Day 2: 0.3L of Top 3. If the pool is 40/60m: Day 1: 1.6kg of Stop Algae Mustard treatment + 10L of Revatop 12%. Day 2: 0.5L of Top 3. If the pool is 80/100m: Day 1: 3kg of Stop Algae Mustard treatment + 20L of Revatop 12%. Day 2: 1L of Top 3. For an effective operation, remember to : Dismantle and brush the back of your spotlight, which is a real algae nest. During the treatment phase, immerse all accessories that were in contact with your algae-infected water, such as toys, inflatable mattresses, etc. Clean your garden shed if you have one. The treatment should last 12 hours, preferably in the evening. Biocidal products should be used with caution. Keep out of reach of children. Before use, read the labels and instructions carefully. Packaging : 1 x MAREVA Mustard Algae Treatment - 3KG1 x REVATOP 12% Algicide - 5L1 x Top 3 non-foaming - 1L 1 x Measuring jugDelivered in their original packaging.