JBL Ca Calcium Test Kit

Suggested value in saltwater aquariums Ca: 400-440 milligrams/litre, Mg: 1200-1400 milligrams/litre First the magnesium level is determined, including calcium, then the calcium is measured and subtracted from the total value The set includes both tests (Ca-Test + Mg-Test) Insufficient levels of calcium and magnesium affect the growth of corals and stunt the growth of the attractive red calciferous algae