Take the guesswork out of coral care with this complete marine test kit from Hanna Instruments—our go-to tools for precision reef maintenance. The Marine Coral Care Kit includes digital handheld checkers for Alkalinity (HI772), Calcium (HI758), and Magnesium (HI783)—three of the most critical parameters for coral growth and reef tank stability. What’s Included: HI772 Alkalinity Checker (dKH) Quickly and accurately measures alkalinity in degrees of carbonate hardness (dKH). Essential for maintaining pH stability and providing the carbonate backbone for coral skeletons. A must-have for dosing and reef balancing. HI758 Calcium Checker Tired of color charts? This digital calcium tester gives precise ppm readings between 200–600 ppm. Perfect for keeping up with calcium demands in LPS and SPS-dominant systems. HI783 Magnesium Checker Accurately measures magnesium levels from 1000 to 1800 ppm using lab-grade colorimetry. Magnesium is key to stabilizing both calcium and alkalinity—this tool helps you avoid the silent crashes caused by imbalances. Why We Use It: Digital Accuracy: Never guess shades again—see the numbers. Easy Workflow: Simple 4-step process for all three checkers. Designed for Saltwater: Tuned specifically for marine chemistry ranges. Lab-Tested, TSA Approved: We use these in our coral systems for a reason—they work.
