{"product_id":"seachem-kalkwasser","title":"Seachem Kalkwasser","description":"\u003ch2\u003eSeachem Kalkwasser\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSeachem Kalkwasser\u003c\/strong\u003e is a high-purity calcium hydroxide limewater mix for marine aquarium keepers maintaining calcium levels close to natural seawater concentrations. It is designed for use in top-off water and can increase pH without directly affecting carbonate alkalinity.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePure calcium hydroxide with high purity and solubility characteristics.\u003c\/li\u003e\n  \u003cli\u003ePrepares kalkwasser or limewater solutions for direct calcium maintenance.\u003c\/li\u003e\n  \u003cli\u003eHelps maintain calcium directly while supporting carbonate alkalinity indirectly.\u003c\/li\u003e\n  \u003cli\u003eCan be used to raise pH without impacting carbonate alkalinity.\u003c\/li\u003e\n  \u003cli\u003eAn economical option for reef aquarium calcium supplementation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow to Use\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNever add Seachem Kalkwasser directly to the aquarium.\u003c\/li\u003e\n  \u003cli\u003eMix the required amount with water, allow the solution to settle, then drip only the clear supernatant (top solution) into the tank.\u003c\/li\u003e\n  \u003cli\u003eDo not allow undissolved material to enter the aquarium.\u003c\/li\u003e\n  \u003cli\u003eAdjust the drip rate to maintain a stable pH of 8.3–8.4.\u003c\/li\u003e\n  \u003cli\u003eKeep the container tightly closed and minimise solution-to-air contact to reduce calcium carbonate formation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eDosage\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdd 3 g (1 teaspoon) to 4 L (1 gallon*) of water and mix to dissolve.\u003c\/li\u003e\n  \u003cli\u003eWhen using pure water, prepare a fully saturated solution with 6 g (2 teaspoons) per 4 L (1 gallon*).\u003c\/li\u003e\n  \u003cli\u003eAdding 4 L (1 gallon*) of saturated kalkwasser solution to 150 L (40 gallons*) raises calcium by 24 mg\/L.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eSuitable For\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMarine and reef aquarium systems where evaporation rate and CO2 concentration allow kalkwasser to maintain calcium and support alkalinity. Kalkwasser can be an effective maintenance method, but it requires diligent monitoring and may be more challenging for beginners.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf additional calcium is required, use Reef Advantage Calcium™, Reef Complete® or Reef Calcium™. For carbonate alkalinity, use Reef Builder™ or Reef Carbonate™. Do not mix these products directly with a kalkwasser solution.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I add Seachem Kalkwasser powder straight into my marine tank?\u003c\/strong\u003e\u003cbr\u003e\nNo. Never add it directly to the aquarium. Prepare the limewater solution separately and drip only the clear top solution into the tank.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow much Seachem Kalkwasser should I mix for regular limewater?\u003c\/strong\u003e\u003cbr\u003e\nMix 3 g (1 teaspoon) with 4 L (1 gallon*) of water. For a fully saturated solution made with pure water, use 6 g (2 teaspoons) per 4 L (1 gallon*).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat aquarium parameters should I monitor when using kalkwasser?\u003c\/strong\u003e\u003cbr\u003e\nMonitor pH and carbonate alkalinity, and adjust the addition rate to maintain pH at 8.3–8.4. Magnesium concentration should also be monitored and maintained.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill kalkwasser affect carbonate alkalinity?\u003c\/strong\u003e\u003cbr\u003e\nIt increases pH without directly impacting carbonate alkalinity, while kalkwasser solutions maintain calcium directly and carbonate alkalinity indirectly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy is there chalky build-up in my aquarium or plumbing?\u003c\/strong\u003e\u003cbr\u003e\nKalkwasser use can increase chalk build-up on substrate and plumbing surfaces. More frequent cleaning may be needed to keep aquarium equipment functioning properly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre there handling precautions for Seachem Kalkwasser?\u003c\/strong\u003e\u003cbr\u003e\nAvoid contact with or breathing the dust. Do not eat it or get it in your eyes. If contact occurs, flush with water for 5–10 minutes; for eye contact, wash immediately with water and seek medical attention.\u003c\/p\u003e","brand":"AD","offers":[{"title":"250g","offer_id":39279177564214,"sku":"000116039307","price":410.0,"currency_code":"ZAR","in_stock":true},{"title":"500g","offer_id":39279177596982,"sku":"000116039703","price":513.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0151\/9016\/3510\/products\/seachem-reef-kalkwasser-pure-calcium-hydroxide-maintains-calcium-ph-boosting-aquarium-supplement.jpg?v=1743712209","url":"https:\/\/jungleaquatics.com\/products\/seachem-kalkwasser","provider":"Jungle Aquatics Pet Store","version":"1.0","type":"link"}