{"product_id":"ntl-spare-gh-test-kit-reagent-10ml","title":"NTL Spare GH Test Kit Reagent 10ml","description":"\u003ch3\u003e\u003cspan\u003eNTL Spare GH (General Hardness) Test Kit Reagent\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eNTL Spare GH\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a replacement reagent for testing the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGeneral Hardness (GH)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e of aquarium water. GH measures the total concentration of dissolved minerals, such as calcium and magnesium, which play an important role in the health of aquarium fish and plants. Knowing your aquarium's GH helps ensure you maintain water conditions suited to the species you keep.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eRegular GH testing is an essential part of maintaining a stable and healthy freshwater aquarium.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eReplacement reagent for GH (General Hardness) water testing.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMeasures dissolved mineral levels in aquarium water.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for freshwater aquarium monitoring.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSimple drop-count test with an easy colour change.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHelps maintain ideal water conditions for different fish species.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eBenefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eAllows accurate monitoring of aquarium water hardness.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHelps create the correct environment for soft or hard water fish.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupports fish health by maintaining stable water chemistry.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEasy-to-read results using a colour change method.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIdeal for routine aquarium maintenance.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eUnderstanding GH\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eGeneral Hardness (GH) measures the total amount of dissolved minerals in the water. The more minerals present, the harder the water.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDifferent fish species require different GH levels:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSoft water species:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e3–6 dGH\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHard water species:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e10–15 dGH\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOne degree of GH (\u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1 dGH\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e) is equal to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e17.8 ppm (as CaCO₃)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhat to Do if GH is Incorrect\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eTest your tap water to determine its natural GH.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIf GH is too high, consider using reverse osmosis (RO) water to reduce hardness.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIf GH is too low, calcium carbonate-based rocks, such as ocean rock, can help gradually increase mineral hardness.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eHow to Use\u003c\/span\u003e\u003c\/h3\u003e\n\u003col data-spread=\"false\" start=\"1\"\u003e\n\u003cli\u003e\u003cspan\u003eEnsure the test tube is clean.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eFill the test tube with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e5ml\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e of aquarium water.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAdd \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2 drops of GH A\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e reagent and mix. The sample should turn dark pink.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAdd \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGH B\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e reagent \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eone drop at a time\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, mixing between each drop.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCount the number of drops required for the sample to change from \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003epink to blue\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eThe number of drops used equals the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGH value in dGH\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eIf the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003efirst drop of GH B\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e turns the sample blue, the GH is \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ebelow 1 dGH\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, indicating very soft water.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eProduct:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e NTL Spare GH Reagent\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Replacement reagent for General Hardness (GH) water testing.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSuitable For:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Freshwater aquariums.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMeasurement Range:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Results expressed in \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003edGH\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e (degrees of General Hardness).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTest Method:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Liquid drop-count colour change test.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eWhy Choose NTL Spare GH?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eMaintaining the correct General Hardness is essential for the long-term health of your aquarium's inhabitants. NTL Spare GH replacement reagent makes it easy to monitor mineral levels accurately, helping you provide the ideal water conditions for your fish and maintain a stable aquatic environment.\u003c\/span\u003e\u003c\/p\u003e","brand":"Aquatic Pets SA","offers":[{"title":"GH-A","offer_id":44341894610987,"sku":"NTL0603","price":101.2,"currency_code":"ZAR","in_stock":true},{"title":"GH-B","offer_id":44341894643755,"sku":"NTL0604","price":101.2,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/4676\/6123\/files\/NTLSPAREGH_A.png?v=1783688449","url":"https:\/\/aquaticpetssa.com\/products\/ntl-spare-gh-test-kit-reagent-10ml","provider":"Aquatic Pets SA","version":"1.0","type":"link"}