Salifert Calcium Test Kit The Salifert Calcium Test Kit is a titration-style aquarium test kit for measuring calcium levels in reef, marine, freshwater and pond water with clear colour-change results. Calcium Testing for Reef Stability Calcium is one of the major elements used by stony corals, coralline algae, clams and other calcifying organisms. Regular testing helps reef keepers maintain stable calcium levels and make better dosing, water-change and calcium reactor adjustments. Salifert Calcium Test Kit Features Measures calcium in small 5 mg/L steps. Accuracy of approximately 10 mg/L. Precise colour change helps detect small but important calcium changes. Not affected by magnesium interference. Provides enough reagent for approximately 50-100 tests. Suitable for marine water, freshwater and garden pond water. Useful for reef aquariums using two-part dosing, kalkwasser, calcium reactors or regular water-change supplementation. Aquarium Use Notes Use this kit to monitor calcium trends rather than chasing single test results. In reef aquariums, calcium should be interpreted alongside alkalinity and magnesium, since all three affect coral growth and overall water chemistry stability. Directions Follow the current instructions included with the test kit. Use clean test vials and syringes, avoid cross-contaminating reagents and read the colour change under good lighting. Record results over time so dosing changes can be made gradually instead of reacting to a single reading.
