{"product_id":"seachem-reef-kalkwasser-1kg-pure-calcium-hydroxide-for-reef-tanks","title":"Seachem Reef Kalkwasser 1kg – Pure Calcium Hydroxide for Reef Tanks","description":"\u003cp data-start=\"219\" data-end=\"495\"\u003eSeachem Reef Kalkwasser 1kg is an ultra-pure calcium hydroxide formulated to prepare high-quality limewater (kalkwasser) solutions for reef aquariums. Designed to maintain calcium at natural seawater levels, kalkwasser supports healthy coral growth while helping stabilise pH.\u003c\/p\u003e\n\u003cp data-start=\"497\" data-end=\"835\"\u003eKalkwasser maintains calcium directly and carbonate alkalinity indirectly, making it an excellent choice for top-off systems. Its exceptional purity and solubility ensure clean dosing without introducing impurities. Reef Kalkwasser also naturally increases pH without negatively impacting carbonate alkalinity when used correctly.\u003c\/p\u003e\n\u003cp data-start=\"837\" data-end=\"931\"\u003eThis 1kg pack is ideal for medium to large reef systems or long-term kalkwasser dosing setups.\u003c\/p\u003e\n\u003cp data-start=\"938\" data-end=\"957\"\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"961\" data-end=\"989\"\u003eUltra-pure calcium hydroxide\u003c\/li\u003e\n\u003cli data-start=\"992\" data-end=\"1040\"\u003eUsed to prepare kalkwasser (limewater) solutions\u003c\/li\u003e\n\u003cli data-start=\"1043\" data-end=\"1084\"\u003eMaintains natural seawater calcium levels\u003c\/li\u003e\n\u003cli data-start=\"1087\" data-end=\"1131\"\u003eSupports coral growth and skeletal formation\u003c\/li\u003e\n\u003cli data-start=\"1134\" data-end=\"1189\"\u003eRaises pH safely without affecting carbonate alkalinity\u003c\/li\u003e\n\u003cli data-start=\"1192\" data-end=\"1229\"\u003eIdeal for use in auto top-off systems\u003c\/li\u003e\n\u003cli data-start=\"1232\" data-end=\"1258\"\u003eHigh solubility and purity\u003c\/li\u003e\n\u003cli data-start=\"1261\" data-end=\"1299\"\u003eSuitable for reef and marine aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1743\" data-end=\"2044\"\u003eSeachem Reef Kalkwasser 1kg delivers unmatched purity and performance for reef aquarists seeking stable calcium levels and healthy coral growth. Perfect for kalkwasser dosing and top-off systems, it provides a reliable and efficient method of calcium supplementation. Available now at Reef Freaks.\u003c\/p\u003e","brand":"Reef-freaks","offers":[{"title":"Default Title","offer_id":55421885219192,"sku":"770063","price":28.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/7115\/3169\/files\/seachem_reef_kalkwasser_1000g.png?v=1768715320","url":"https:\/\/reef-freaks.co.uk\/products\/seachem-reef-kalkwasser-1kg-pure-calcium-hydroxide-for-reef-tanks","provider":"Reef-freaks","version":"1.0","type":"link"}