Salifert Calcium Aquarium Test Kit Monitor your reef’s skeletal-building power with Salifert’s precise calcium test. Featuring sharp color changes in 5 mg/L increments and testing repeatability, it's the reef keeper’s trusted standard—easy, accurate, and efficient. 🐚💙 Features & Benefits Precise and reliable—detects changes in 5 mg/L increments with accuracy around ±10 mg/L Sharp color transition makes reading seamless and repeatable Provides approximately 50–100 tests per kit—depending on tank levels Respected brand among serious reefers for decades Quick Testing Tips Rinse the test tube with your aquarium sample before starting to reduce contamination. Add drops steadily until the solution changes color—read immediately against the color card. Test regularly to maintain calcium in the ideal reef range of 400–450 mg/L. What’s Included Reagent bottle and testing solution Plastic test tube and clear color chart Instruction sheet More Information Item Name Salifert Calcium Aquarium Test Kit Brand Salifert Manufacturer SKU 205100 UPC 8714079130347 Tests Per Kit 50–100 tests Resolution 5 mg/L increments