EU plug only. No UK plug\nAquaforest Magnesium Test Pro Water Test Sea Water Aquarium\nThe description of this item has been automatically translated. If you have any questions, please feel free to contact us.\n\nDescription \n\nAquaforest TestPro Magnesium is designed to quickly measure the concentration of magnesium (Mg) in seawater. Magnesium plays an important role in many biological processes, for example it is involved in building the calcium carbonate skeleton of hard corals. Due to its unique chemical properties, it has a significant impact on the buffering capacity of seawater and also prevents excessive precipitation of calcium carbonate on aquarium equipment. Adequate magnesium levels are critical to maintaining the proper balance of calcium and alkalinity in reef aquariums. Magnesium levels should be analyzed regularly along with other critical water parameters such as calcium and alkalinity. The concentration of magnesium in natural seawater is between 1260-1500 mg/l (ppe