{"id":551,"date":"2026-05-04T07:10:00","date_gmt":"2026-05-04T05:10:00","guid":{"rendered":"https:\/\/piscinistes-charente-maritime.fr\/blog\/?p=551"},"modified":"2026-04-27T20:39:13","modified_gmt":"2026-04-27T18:39:13","slug":"calcul-dosage-chlore-choc-piscine","status":"publish","type":"post","link":"https:\/\/piscinistes-charente-maritime.fr\/blog\/calcul-dosage-chlore-choc-piscine\/","title":{"rendered":"Quel dosage de chlore choc pour votre piscine ?"},"content":{"rendered":"\n<p><strong>Le chlore choc<\/strong> redresse une eau verte, trouble ou mal \u00e9quilibr\u00e9e en quelques heures. Encore faut-il doser juste. Trop peu, \u00e7a ne sert \u00e0 rien. Trop, vous ne pouvez plus nager pendant deux jours.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Comment rattraper une eau verte de piscine? Chlore choc piscine verte | BAYROL\" width=\"720\" height=\"405\" src=\"https:\/\/www.youtube.com\/embed\/OpcEiPBSZw0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Sommaire<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/piscinistes-charente-maritime.fr\/blog\/calcul-dosage-chlore-choc-piscine\/#Quelle_quantite_de_chlore_choc_selon_votre_piscine\" >Quelle quantit\u00e9 de chlore choc selon votre piscine ?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/piscinistes-charente-maritime.fr\/blog\/calcul-dosage-chlore-choc-piscine\/#Calculer_le_volume_de_votre_bassin\" >Calculer le volume de votre bassin<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/piscinistes-charente-maritime.fr\/blog\/calcul-dosage-chlore-choc-piscine\/#Adapter_selon_la_forme_du_chlore_choc\" >Adapter selon la forme du chlore choc<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/piscinistes-charente-maritime.fr\/blog\/calcul-dosage-chlore-choc-piscine\/#Comment_appliquer_le_chlore_choc_correctement\" >Comment appliquer le chlore choc correctement ?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/piscinistes-charente-maritime.fr\/blog\/calcul-dosage-chlore-choc-piscine\/#Preparer_leau_avant_le_traitement\" >Pr\u00e9parer l&rsquo;eau avant le traitement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/piscinistes-charente-maritime.fr\/blog\/calcul-dosage-chlore-choc-piscine\/#Verser_le_produit_au_bon_moment\" >Verser le produit au bon moment<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/piscinistes-charente-maritime.fr\/blog\/calcul-dosage-chlore-choc-piscine\/#Quand_faut-il_faire_un_chlore_choc\" >Quand faut-il faire un chlore choc ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/piscinistes-charente-maritime.fr\/blog\/calcul-dosage-chlore-choc-piscine\/#Combien_de_temps_attendre_avant_de_se_baigner\" >Combien de temps attendre avant de se baigner ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/piscinistes-charente-maritime.fr\/blog\/calcul-dosage-chlore-choc-piscine\/#Et_maintenant\" >Et maintenant ?<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"quelle-quantit\u00e9-de-chlore-choc-selon-votre-piscine-\"><span class=\"ez-toc-section\" id=\"Quelle_quantite_de_chlore_choc_selon_votre_piscine\"><\/span>Quelle quantit\u00e9 de chlore choc selon votre piscine ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>La r\u00e8gle de base : <strong>20 g de chlore choc granul\u00e9s \u00e0 70 % de chlore actif pour 10 m\u00b3 d&rsquo;eau<\/strong>. En cas d&rsquo;algues ou d&rsquo;eau verte, doublez la dose.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Volume de la piscine<\/th><th>Eau trouble (dose standard)<\/th><th>Eau verte (dose double)<\/th><\/tr><\/thead><tbody><tr><td>20 m\u00b3<\/td><td>40 g<\/td><td>80 g<\/td><\/tr><tr><td>40 m\u00b3<\/td><td>80 g<\/td><td>160 g<\/td><\/tr><tr><td>60 m\u00b3<\/td><td>120 g<\/td><td>240 g<\/td><\/tr><tr><td>80 m\u00b3<\/td><td>160 g<\/td><td>320 g<\/td><\/tr><tr><td>100 m\u00b3<\/td><td>200 g<\/td><td>400 g<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Ces doses s&rsquo;appliquent \u00e0 un produit titrant 70 % de chlore actif. V\u00e9rifiez toujours l&rsquo;\u00e9tiquette de votre produit avant de mesurer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"calculer-le-volume-de-votre-bassin\"><span class=\"ez-toc-section\" id=\"Calculer_le_volume_de_votre_bassin\"><\/span>Calculer le volume de votre bassin<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Pas de dosage sans volume. Mesurez longueur \u00d7 largeur \u00d7 profondeur moyenne. Pour une piscine ronde, utilisez : rayon\u00b2 \u00d7 3,14 \u00d7 profondeur. R\u00e9sultat en m\u00b3, directement utilisable dans le tableau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"adapter-selon-la-forme-du-chlore-choc\"><span class=\"ez-toc-section\" id=\"Adapter_selon_la_forme_du_chlore_choc\"><\/span>Adapter selon la forme du chlore choc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Le chlore choc se vend en granul\u00e9s, galets ou liquide. Les concentrations varient.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Granul\u00e9s \u00e0 70 %<\/strong> : r\u00e9f\u00e9rence du tableau ci-dessus<\/li>\n\n\n\n<li><strong>Galets \u00e0 90 %<\/strong> : r\u00e9duisez la dose de 20 %<\/li>\n\n\n\n<li><strong>Liquide \u00e0 12 %<\/strong> : comptez environ 1 litre pour 10 m\u00b3 en traitement standard<\/li>\n<\/ul>\n\n\n\n<p>Lisez le dosage fabricant. <em>Hayward<\/em>, <em>Zodiac<\/em> et les marques de piscines comme <em>Desjoyaux<\/em> ou <em>Waterair<\/em> proposent leurs propres produits avec des concentrations sp\u00e9cifiques.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"comment-appliquer-le-chlore-choc-correctement-\"><span class=\"ez-toc-section\" id=\"Comment_appliquer_le_chlore_choc_correctement\"><\/span>Comment appliquer le chlore choc correctement ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Un bon dosage mal appliqu\u00e9 reste inefficace. La m\u00e9thode compte autant que la quantit\u00e9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pr\u00e9parer-leau-avant-le-traitement\"><span class=\"ez-toc-section\" id=\"Preparer_leau_avant_le_traitement\"><\/span>Pr\u00e9parer l&rsquo;eau avant le traitement<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>V\u00e9rifiez le pH avant tout. Il doit se situer entre 7,2 et 7,4. En dehors de cette plage, <strong>le chlore choc perd jusqu&rsquo;\u00e0 60 % de son action<\/strong>. Rectifiez d&rsquo;abord le pH, puis traitez.<\/p>\n\n\n\n<p>Filtrez pendant toute la dur\u00e9e du traitement. Minimum 12 heures, id\u00e9alement 24 heures. La filtration distribue le produit et \u00e9limine les r\u00e9sidus.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"verser-le-produit-au-bon-moment\"><span class=\"ez-toc-section\" id=\"Verser_le_produit_au_bon_moment\"><\/span>Verser le produit au bon moment<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Traitez le soir. Le soleil d\u00e9grade le chlore actif tr\u00e8s rapidement. Une application en pleine journ\u00e9e perd 30 \u00e0 50 % de son efficacit\u00e9 en quelques heures.<\/p>\n\n\n\n<p>Versez le produit directement dans l&rsquo;eau, devant les buses de refoulement, moteur en marche. Ne le jetez jamais dans le skimmer. Ne le m\u00e9langez jamais avec un autre produit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"quand-faut-il-faire-un-chlore-choc-\"><span class=\"ez-toc-section\" id=\"Quand_faut-il_faire_un_chlore_choc\"><\/span>Quand faut-il faire un chlore choc ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Le chlore choc<\/strong> ne remplace pas l&rsquo;entretien r\u00e9gulier. C&rsquo;est un traitement curatif, pas pr\u00e9ventif.<\/p>\n\n\n\n<p>Intervenez dans ces situations :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Eau verte ou trouble apr\u00e8s une forte chaleur<\/li>\n\n\n\n<li>Retour de vacances, bassin laiss\u00e9 sans entretien<\/li>\n\n\n\n<li>Apr\u00e8s une f\u00eate ou une forte fr\u00e9quentation<\/li>\n\n\n\n<li>Taux de chlore inf\u00e9rieur \u00e0 0,5 mg\/L malgr\u00e9 le traitement habituel<\/li>\n\n\n\n<li>Ouverture de saison<\/li>\n<\/ul>\n\n\n\n<p>En entretien courant, maintenez un taux de chlore entre 1 et 1,5 mg\/L. Le choc intervient quand ce seuil n&rsquo;est plus atteignable par les moyens habituels.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"combien-de-temps-attendre-avant-de-se-baigner-\"><span class=\"ez-toc-section\" id=\"Combien_de_temps_attendre_avant_de_se_baigner\"><\/span>Combien de temps attendre avant de se baigner ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Attendez que le taux de chlore redescende sous 3 mg\/L. Mesurez avec un testeur ou des bandelettes. En pratique, comptez <strong>24 \u00e0 48 heures<\/strong> selon la dose utilis\u00e9e et la temp\u00e9rature de l&rsquo;eau.<\/p>\n\n\n\n<p>Ne vous fiez pas \u00e0 l&rsquo;aspect de l&rsquo;eau. Une eau claire peut encore pr\u00e9senter un taux trop \u00e9lev\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"et-maintenant-\"><span class=\"ez-toc-section\" id=\"Et_maintenant\"><\/span>Et maintenant ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Calculez votre volume, v\u00e9rifiez votre pH, dosez selon le tableau. Traitez le soir, filtrez 24 heures. Testez avant de plonger. C&rsquo;est tout.<\/p>\n\n\n\n<p><em>Camille<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le chlore choc redresse une eau verte, trouble ou mal \u00e9quilibr\u00e9e en quelques heures. Encore faut-il doser juste. Trop peu, \u00e7a ne sert \u00e0 rien. Trop, vous ne pouvez plus nager pendant deux jours. Quelle quantit\u00e9 de chlore choc selon votre piscine ? La r\u00e8gle de base : 20 g de chlore choc granul\u00e9s \u00e0&#8230;<\/p>\n","protected":false},"author":1,"featured_media":552,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[5],"tags":[],"class_list":["post-551","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-entretien-piscine"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Calcul du dosage de chlore choc : \u00e9vitez l\u2019erreur fatale en 2026<\/title>\n<meta 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