Calcium CA2+ Test Kit

API Calcium CA2+ Test Kit


Contains 2 test bottles, easy-to-ready instructions, and a glass test tube.



Calcium is one of the most important elements in a reef aquarium. Reef invertebrates, such as corals, crustaceans, mollusks, and even some type of encrusting algae, need calcium to grow and remain healthy. Over time, the calcium level drops as it is used by invertebrates, or as it reacts with excess phosphate. The APIĀ® CALCIUM TEST KIT measures calcium levels as low as 20 mg/L to help you keep your reef inhabitants healthy.

Do I need to test calcium parameters in a freshwater aquarium?

No, calcium levels need to be monitored and maintained in reef or marine aquariums, as improper levels can be harmful to corals and crustaceans.

How often should I test my calcium levels?

For best results, test calcium levels with API CALCIUM TEST KIT in your saltwater tank weekly.