{"product_id":"hanna-hi758-marine-calcium-checker-saltwater-aquarium-calcium-testing","title":"Hanna HI758 Marine Calcium Checker — Saltwater Aquarium Calcium Testing","description":"\u003cdiv\u003e\n  \u003ch2\u003eSimple, on the spot calcium testing for marine tanks\u003c\/h2\u003e\n  \u003cp\u003eCalcium is a foundational element in marine ecosystems, supporting skeletons in corals and shells in invertebrates. In seawater, calcium levels can vary based on source and treatment. The HI758 Calcium Checker HC offers an approachable way to monitor these levels without professional lab services, making it a practical addition to any saltwater setup.\u003c\/p\u003e\n  \u003cp\u003eThis handheld tester is designed for hobbyists who want clear results with minimal fuss. Its workflow is streamlined for quick readings and easy handling, so you can focus on reef keeping and water maintenance rather than complex procedures.\u003c\/p\u003e\n  \u003ch3\u003eWhat you can expect in everyday use\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eFast, on site readings during water changes or after dosing, helping you track calcium trends over time.\u003c\/li\u003e\n    \u003cli\u003eAccurate enough for routine monitoring, with a specified accuracy of about 6 percent at standard room temperature.\u003c\/li\u003e\n    \u003cli\u003eSimple operation with one button to zero and measure, reducing steps and potential user error.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cul\u003e\n    \u003cli\u003eReadable display and practical power features: a large LCD screen and an auto off function to save the battery.\u003c\/li\u003e\n    \u003cli\u003eCompact form and single AAA battery power for easy handling around the aquarium or a return trip to the shelf.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eTechnical details reflect a practical testing approach. The device uses an adapted method to quantify calcium in water, suitable for fast decisions about supplementation. It is rated for environments from 0 to 50 C (32 to 122 F) and up to 95 percent relative humidity, ensuring it performs in typical hobbyist settings. The 610 nm LED light source and silicon photodetector work together to produce a readable result, while the auto shut off helps conserve battery life during longer testing sessions.\u003c\/p\u003e\n  \u003cp\u003eWith the HI758, you gain a reliable tool to observe how calcium responds to lighting, feeding, and changes in water chemistry. While this is not a substitute for professional lab testing, it offers a practical, cost effective way to stay informed and adjust routines based on real time data.\u003c\/p\u003e\n\u003c\/div\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 does the HI758 measure and in what range?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It measures calcium concentration in ppm, with a 200–600 ppm range for marine tanks.\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: Single button operation: zero, add reagents, and read for quick results.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40563815678081,"sku":"B005FH2OIY","price":162.8,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/4757\/3633\/files\/hanna-instruments-hi758-marine-calcium-checker-test-kit-setup.jpg?v=1765887413","url":"https:\/\/petiva.ca\/products\/hanna-hi758-marine-calcium-checker-saltwater-aquarium-calcium-testing","provider":"Petiva","version":"1.0","type":"link"}