{"product_id":"nt-labs-hardness-test-kit-new-stock-expiry-05-2030","title":"NT Labs Hardness Test Kit New Stock | Expiry 05\/2030","description":"\u003cdiv class=\"woodmart-scroll-content\" tabindex=\"0\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eUp to 80 Tests\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is KH?\u003c\/strong\u003e\u003cbr\u003eKH, also known as “total alkalinity” or “carbonate hardness”, is a measure of the buffering capacity of the water in your aquarium. The buffering capacity refers to how well it can resist changes in pH.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is GH?\u003c\/strong\u003e\u003cbr\u003eGeneral Hardness is a measure of the total amount of minerals dissolved in the water. Water hardness lies on a spectrum between ‘soft water’ or ‘hard water’ depending on the amount of dissolved minerals: the more minerals present, the greater the hardness. Hard water is responsible for the build-up of limescale.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKH in detail:\u003cbr\u003eWhat is the correct KH level?\u003c\/strong\u003e\u003cbr\u003eThis test kit measures KH in dKH (where one dKH = 17.8 ppm as CaCO3). It is essential to maintain a minimum KH level of at least 4 dKH at all times. A KH of between 6 and 8 dKH is more desirable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat do I do if the KH level is wrong?\u003c\/strong\u003e\u003cbr\u003eCheck the KH level of your tap water. If the level is above 6 dKH, then regular water changes should keep the KH value in the aquarium topped up at a reasonable level. If the KH value of your tap water is below 6 dKH\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Rv6FGR9T2Ac?rel=0\u0026amp;enablejsapi=1\u0026amp;origin=https:%2F%2Fwww.nt-labs.com\" id=\"widget2\" data-gtm-yt-inspected-12=\"true\" title=\"How to Test Your Aquarium Water\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Chennai Aqua Studio","offers":[{"title":"Default Title","offer_id":50019686809837,"sku":null,"price":1300.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/9538\/6093\/files\/ChatGPTImageMay27_2026_08_56_05PM.png?v=1779896283","url":"https:\/\/chennaiaquastudio.in\/products\/nt-labs-hardness-test-kit-new-stock-expiry-05-2030","provider":"Chennai Aqua Studio","version":"1.0","type":"link"}