API Calcium Test Kit API Calcium Test Kit is a reef aquarium liquid test kit for measuring calcium levels as low as 20 mg/L, helping aquarists monitor one of the key elements used by corals, crustaceans, mollusks, and encrusting algae. API Calcium Test Kit for Reef Aquarium Calcium Monitoring Calcium is steadily consumed in reef aquariums as corals and other reef invertebrates build skeletons, shells, and calcium-based structures. This kit helps measure calcium so supplementation and water-change routines can be adjusted based on actual test results. Titration Testing for Coral and Invertebrate Calcium Demand Measures calcium levels as low as 20 mg/L. Designed for use in reef aquariums. Uses a titration method with an easy-to-see colour change. Helps monitor calcium depletion caused by coral and invertebrate growth. Useful for reef keepers dosing calcium supplements or balancing calcium and alkalinity. Helps support more informed reef maintenance instead of guessing calcium demand. API Calcium Test Kit Reef Use Notes Product type: liquid calcium test kit Primary use: reef aquarium calcium testing Measurement capability: calcium levels as low as 20 mg/L Best fit: reef aquariums with corals, crustaceans, mollusks, or coralline algae Test before adjusting calcium supplementation. Use with alkalinity testing for a better view of reef mineral balance. API Calcium Test Kit Testing Directions Rinse the test tube with clean water before testing. Fill the test tube with aquarium water according to the instruction booklet. Add the calcium test solutions in the order and amounts listed in the instructions. Use the titration colour change to determine the calcium level. Compare and record results before making calcium adjustments. Rinse the test tube after use and do not pour test contents back into the aquarium. What's Included Two calcium test solution bottles One capped test tube Instructions
