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

The MC810 MAX Monitor automatically monitors and displays pH/TDS/Temp levels

Be up in running in no time

Weight: 96

HM Digital COM-80 TDS/EC meter + PH-80 pH meter + PH-STOR storage solution + C342 ppm TDS/EC solution Meter/Solution COMBO

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,