{"product_id":"hanna-instruments-hi758-marine-calcium-checker-for-saltwater-aquariums","title":"Hanna Instruments HI758 Marine Calcium Checker for Saltwater Aquariums","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Hanna Instruments HI758 Marine Calcium Checker is a compact, user‑friendly tool designed for saltwater aquariums. Calcium is a key element in marine environments, supporting the structure of shells and corals. This checker provides quick, on‑the‑spot readings so hobbyists can monitor calcium levels without sending samples to a lab.\u003c\/p\u003e\n\u003cp\u003eDesigned for practical use, the HI758 emphasizes simplicity and reliability. A two‑step process delivers a calcium concentration in parts per million (ppm), helping you stay informed about your tank’s hardness and water balance. The device uses a light‑based readout and is built to perform in typical hobbyist setups, from home offices to dedicated marine rooms.\u003c\/p\u003e\n\u003ch3\u003eWhat makes the HI758 easy and reliable\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eEasier to use and more accurate than chemical test kits, with a fast, on‑site readout\u003c\/li\u003e\n  \u003cli\u003eAccuracy within +\/-6% of reading at 25°C (77°F)\u003c\/li\u003e\n  \u003cli\u003eRange of 200 to 600 ppm, covering common seawater calcium levels\u003c\/li\u003e\n  \u003cli\u003eLarge LCD screen for clear readability in various lighting conditions\u003c\/li\u003e\n  \u003cli\u003eAuto‑shutoff extends battery life between uses\u003c\/li\u003e\n  \u003cli\u003eOperated by a single AAA battery for convenient field testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use in 3 simple steps\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eZero the instrument by placing 0.1 mL of your sample with Reagent A and deionized water in the vial, then insert the vial into the HI758 and press the button\u003c\/li\u003e\n  \u003cli\u003eRemove the vial, add Reagent B, and shake to dissolve the reagents\u003c\/li\u003e\n  \u003cli\u003eReinsert the vial and press the button again to read the calcium concentration in ppm on the display\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReal‑world advantages for marine hobbyists\u003c\/h3\u003e\n\u003cp\u003eUse this checker to get a quick sense of calcium trends in your saltwater tank, enabling informed decisions about supplementation or water changes. The tool is designed to be portable, letting you test during tank maintenance, at the store, or before introducing new rock or coral pieces. While this is not a medical device, it provides a practical way to monitor an important water quality parameter and compare readings over time.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What can the HI758 Marine Calcium Checker help me assess?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It provides on‑the‑spot calcium readings in water samples for saltwater aquariums.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How easy is the HI758 to use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Zero and measure with one button, then follow the two‑step reagent process for a readout.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57197486145913,"sku":"B005FH2OIY","price":101.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/8934\/1049\/files\/hanna-instruments-hi758-marine-calcium-checker-bottle-pour.jpg?v=1777732333","url":"https:\/\/petlyvox.com\/products\/hanna-instruments-hi758-marine-calcium-checker-for-saltwater-aquariums","provider":"petlyvox","version":"1.0","type":"link"}