{"id":33,"date":"2026-07-12T15:40:00","date_gmt":"2026-07-12T07:40:00","guid":{"rendered":"https:\/\/sdic-tcca.hbkaixuan.cn\/?p=33"},"modified":"2026-07-12T15:40:00","modified_gmt":"2026-07-12T07:40:00","slug":"swimming-pool-chlorine-dosage-guide","status":"publish","type":"post","link":"https:\/\/sdic-tcca.hbkaixuan.cn\/?p=33","title":{"rendered":"Swimming Pool Chlorine Dosage Guide: SDIC vs TCCA per m3, per Season, per Climate"},"content":{"rendered":"<p>Over-chlorinating burns eyes, damages equipment, and wastes chemicals. Under-chlorinating breeds algae and creates a health risk. This guide gives you the exact dosage per m3 for both SDIC and TCCA, adjusted for real-world variables.<\/p>\n<h2>1. The Baseline Formula<\/h2>\n<p>Target free chlorine residual: <strong>1.0-3.0 mg\/L (ppm)<\/strong> at all times.<\/p>\n<p>Baseline chlorine demand per m3 per day:<\/p>\n<ul>\n<li>Indoor pool, low use: 0.5 g active chlorine\/m3\/day<\/li>\n<li>Outdoor pool, low use: 1.5 g\/m3\/day<\/li>\n<li>Outdoor pool, heavy use (public, hotel): 3.0-5.0 g\/m3\/day<\/li>\n<li>Water park, wave pool: 8.0-12.0 g\/m3\/day<\/li>\n<\/ul>\n<h2>2. Converting to SDIC \/ TCCA Grams<\/h2>\n<p>Since SDIC is 60% and TCCA is 90% available chlorine:<\/p>\n<table>\n<thead>\n<tr>\n<th>Application<\/th>\n<th>Active Chlorine Needed<\/th>\n<th>SDIC 60% dose<\/th>\n<th>TCCA 90% dose<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Indoor low use<\/td>\n<td>0.5 g\/m3<\/td>\n<td>0.83 g\/m3<\/td>\n<td>0.56 g\/m3<\/td>\n<\/tr>\n<tr>\n<td>Outdoor residential<\/td>\n<td>1.5 g\/m3<\/td>\n<td>2.5 g\/m3<\/td>\n<td>1.67 g\/m3<\/td>\n<\/tr>\n<tr>\n<td>Hotel\/gym pool<\/td>\n<td>3.0 g\/m3<\/td>\n<td>5.0 g\/m3<\/td>\n<td>3.33 g\/m3<\/td>\n<\/tr>\n<tr>\n<td>Water park<\/td>\n<td>10 g\/m3<\/td>\n<td>16.67 g\/m3<\/td>\n<td>11.11 g\/m3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>3. Seasonal Adjustment Multipliers<\/h2>\n<ul>\n<li>Summer (water &gt; 28\u00b0C): \u00d7 1.5 (heat accelerates chlorine consumption)<\/li>\n<li>UV-heavy days (peak sun): \u00d7 1.3 (cyanuric acid helps but not fully)<\/li>\n<li>Rainstorm event: + 20 g SDIC per 10 m3 for shock treatment<\/li>\n<li>After pool party: + 30 g SDIC per 10 m3 shock (with 2-hour circulation)<\/li>\n<\/ul>\n<h2>4. Shock Treatment Protocol<\/h2>\n<p>Shock the pool weekly using SDIC (fast-acting):<\/p>\n<ol>\n<li>Test current chlorine level (target: 5-10 mg\/L for shock)<\/li>\n<li>Calculate: (10 &#8211; current) \u00d7 pool volume in m3 = grams of chlorine needed<\/li>\n<li>Convert to SDIC: divide by 0.6 \u2192 grams of SDIC needed<\/li>\n<li>Dissolve in bucket first, then pour around pool perimeter<\/li>\n<li>Run circulation for 2 hours before swimming<\/li>\n<li>Test chlorine drops back to 1-3 mg\/L before allowing swimmers<\/li>\n<\/ol>\n<h2>5. TCCA Slow-Release Dosing<\/h2>\n<p>Using 200g TCCA tablets in a floating dispenser:<\/p>\n<table>\n<thead>\n<tr>\n<th>Pool Volume<\/th>\n<th>Tablets Needed (weekly)<\/th>\n<th>Notes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>15-25 m3 (residential)<\/td>\n<td>1 \u00d7 200g<\/td>\n<td>Check after 5-7 days<\/td>\n<\/tr>\n<tr>\n<td>50 m3<\/td>\n<td>2 \u00d7 200g<\/td>\n<td>Rotate positioning<\/td>\n<\/tr>\n<tr>\n<td>100 m3<\/td>\n<td>3-4 \u00d7 200g<\/td>\n<td>Consider automatic chlorinator<\/td>\n<\/tr>\n<tr>\n<td>500 m3 (hotel)<\/td>\n<td>Use automatic chlorinator<\/td>\n<td>Feed rate 20-40g\/hour<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>6. Common Dosing Mistakes<\/h2>\n<ul>\n<li>Adding tablets directly into skimmer basket \u2014 corrodes basket over time<\/li>\n<li>Mixing SDIC and TCCA in same tablet feeder \u2014 chemical incompatibility<\/li>\n<li>Dosing based on visible algae \u2014 too late, dose weekly not reactively<\/li>\n<li>Ignoring cyanuric acid level (should be 30-50 mg\/L; &gt; 100 mg\/L blocks chlorine)<\/li>\n<li>Not calibrating test kits (DPD tablets expire in 12 months)<\/li>\n<\/ul>\n<h2>Bulk Buy SDIC + TCCA for Pool Service<\/h2>\n<p>Shilan Chemical supplies pool service companies across 30+ countries. MOQ 1 ton, mixed pallets of SDIC + TCCA available. <a href=\"https:\/\/sdic-tcca.hbkaixuan.cn\/contact.html\">Request bulk quote \u2192<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>How much SDIC or TCCA does your pool actually need? This chart-driven guide gives dosage per m3 by season, climate, and bather load. Bonus: 3 free calculators inside.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-33","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/sdic-tcca.hbkaixuan.cn\/index.php?rest_route=\/wp\/v2\/posts\/33","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sdic-tcca.hbkaixuan.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sdic-tcca.hbkaixuan.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sdic-tcca.hbkaixuan.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sdic-tcca.hbkaixuan.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=33"}],"version-history":[{"count":0,"href":"https:\/\/sdic-tcca.hbkaixuan.cn\/index.php?rest_route=\/wp\/v2\/posts\/33\/revisions"}],"wp:attachment":[{"href":"https:\/\/sdic-tcca.hbkaixuan.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=33"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sdic-tcca.hbkaixuan.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=33"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sdic-tcca.hbkaixuan.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=33"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}