Fritz Calcium Test Kit hydrometer and a separate 3W channel

and a separate 3W channel for moonlight

Measurement Spoon

set up a continuous drip system

Come with the ReefATO+ system

For example

Fritz Calcium Test Kit hydrometer and a separate 3W channelFritz Liquid Test Kits Calcium Accurate in both Fresh and Saltwater Easy to Read Instructions Essential to Monitoring Proper Ionic Balance About Fritz Liquid Test Kits Calcium Calcium (Ca2+) is vital to many biological functions. In saltwater aquariums, calcium should remain in the proper ionic balance along with alkalinity (KH) and magnesium (Mg2+). A calcium level outside of this ionic balance can cause poor coral skeleton growth and tissue