NT Labs MARINE Calcium Test Kit

Calcium is one of the critical building blocks for corals, clams, calcareous algae and many other marine organisms. After sodium and magnesium, calcium is the third-most abundant cation found in seawater and is vital for a balanced marine environment.

Achieving the correct calcium concentration range is critical: too little can lead to poor coral health, while too much can result in depletion of carbonate hardness (KH). Testing for calcium allows you to ensure optimal conditions for your aquarium inhabitants and the stability of other significant water chemistry parameters.

The typical value of calcium found in seawater is 420 mg/l, but values in the aquarium vary from 380 mg/l to 450 mg/l, dependent on the method of running your aquarium.