99 ppm (mg/L) (NH3-N)

weekend travelers

0 and pH 10

Optimum filtration up to 100 gallonsHolds up to 10 cups of water in the same space as 5-cup pitchersMeasures 10

Reliable Results – Professional-grade sensor delivers stable readings in seconds

Hanna Marine Magnesium Checker HC - HI783 Water Quality 99 ppm (mg/L) (NH3-N)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,