Hanna Marine Magnesium Checker HC - HI783 EC probe Calibration: Adjustable (manual)

Calibration: Adjustable (manual)

Stay on top of your filter replacements and save with the Santevia Gravity System Fluoride Filter Combo Pack

01) or (pH 4

freshwater

provides a reading  measured in parts per million of contaminates per unit of volume in a solution

Hanna Marine Magnesium Checker HC - HI783 EC probe Calibration: Adjustable (manual)The first Magnesium test of its kind for saltwater aquariums, our Marine Magnesium Checker HC (HI783) is just what every reef tank owner needs. Struggling with test kits is now a thing of the past. Stop guessing or interpreting a color change by eye. Get a fast, accurate digital read out every time. Perfect for testing and measuring Magnesium levels in saltwater aquariums, reef tanks, and other marine and aquaculture applications. Easy to read,